Browse Topic: Doors
Occupant packaging is one of the key tasks involved in the early architectural phase of a vehicle. Accommodation, as a convention, is generally considered related to a car’s interior. Typical roominess metrics of the occupant like hip room, shoulder room, and elbow room are defined with the door in its closed condition. Several other roominess metrics like knee room, leg room, head room, and the like are also specified. While all the guidelines are defined with doors in their closed condition, it is also important to consider the dynamics that exist while the occupant is entering the vehicle. This article expands the traditional understanding of occupant accommodation beyond conventionally considering the vehicle interior’s ability to accommodate anthropometry. It broadens the scope to include dynamic conditions, such as when doors are opened, providing a more realistic and practical perspective. As a luxury car manufacturer, it is important to ensure the best overall customer
The recent surge in platforms like YouTube has facilitated greater access to information for consumers, and vehicles are no exception, so consumers are increasingly demanding of the quality of their vehicles. By the way, the door is composed of glass, moldings, and other parts that consumers can touch directly, and because it is a moving part, many quality issues arise. In particular, the door panel is assembled from all of the above-mentioned parts and thereby necessitates a robust structure. Therefore, this study focuses on the structural stiffness of the door inner panel module mounting area because the door module is closely to the glass raising and lowering, which is intrinsically linked to various quality issues
With 40 years of experience to its name, Sunview Patio Doors Ltd. (acquired by Novatech Group in 2021), has solved one of the industry’s top challenges: meeting customers’ increased demands for faster and better services, while providing an option for product customization. Its ability to adopt digital technology allowed the company to satisfy its customers and compete globally in the marketplace
The interaction of soldiers with advanced combat vehicle systems grows more complex with: 1) Advancements and adaptation to emerging technology; 2) Increased sharing and proliferation of data and information; 3) Changing tactics and requirements of where and how these systems are to be used to gain battlefield dominance; 4) The goal to standardize software and hardware components to reduce costs/maintainability and enable more rapid integration into existing and emerging vehicle systems; 5) The unique shock and vibration experienced by ground combat systems; 6) Weight of the vehicle must be considered for transportability, which drives the vehicle size, that in turn impacts the crewstation volume, or the space soldiers occupy to operate the platform; 7) Survivability and safety of the crew is also essential, so it is desirable to bring the crew under armor instead of head out of hatch
The Indian passenger vehicle market has grown by more than 40% by volume in the last decade and has reached a record high in FY23. This has created a more diverse and demanding customer base that values interior design and quality. The modern customer expects a high level of aesthetics and sophistication in their vehicle interiors - including in the luggage area. The Luggage Cover (Parcel Tray) is a component in the luggage area of a passenger vehicle that is used to conceal the luggage & improve its aesthetics. The cover is generally made of thermoplastic material with rotating hinges and is held in its place by the compression from the back door, which is frequently opened and closed. The parts that connect the cover to the door (usually an elastomer interface on the thermoplastic tray) tend to change over a period due to climatic conditions and leads to rattling concerns over a period. The change in elastomer interface with the back door (due to repeated compression & climatic
Integrating sensors into rotational mechanisms could make it possible for engineers to build smart hinges that know when a door has been opened, or gears inside a motor that tell a mechanic how fast they are rotating. MIT engineers have now developed a way to easily integrate sensors into these types of mechanisms, with 3D printing
This specification establishes the requirements for a polysulfide sealing compound in putty consistency to be used for form-in-place sealing of removable doors, skins, and panels
The analysis presented demonstrates the application of section 5.1.1.4 (a) Inertial Force Calculation of the Federal Motor Vehicle Safety Standard 206 (FMVSS 206) to a step van pocket sliding door latch system. FMVSS 206 applies to step van trucks regardless of the gross vehicle weight rating (GVWR) as clarified by the National Highway Traffic Safety Administration (NHTSA). The step van latching system is a unique latch configuration with a floating pivot that enables the latch to engage the striker plates at both the open and closed body pillars for latching closed and holding open. The latch forkbolt bar can be actuated in both unlatching directions with the same handle. FMVSS 206 specifies a minimum inertial resistance requirement for the latch system to ensure the latched state is maintained when acted upon by inertial force generated during an impact event. This calculation method follows the approach recommended in SAE J839 for a door latching system. Two calculation analysis
An automotive door latch that functions manually or electronically is a vital component of a door closure system. It primarily aims to provide security of the occupants by securing the door system by ensuring timely locking and unlocking of the doors. A wide range of factors like safety, ergonomics, and security influence the development of these latches to eliminate safety. With the growing trend and advancements, automotive electronics is becoming more complex and prevalent. Hence, any exposure of electrical/electronic components to water make them susceptible to short circuits, corrosion etc., thereby may make it the functionality of systems and increasing the chances of failure in these devices. Intrusion of water possible into the latch system can be disastrous depending on the climatic conditions. Stringent safety criteria have given rise to unconventional test methods that are time-consuming and hence necessitate virtual validation techniques. Virtual validation becomes a viable
Imagine a home computer operating one million times faster than the most expensive hardware on the market. Now, imagine that level of computing power as the industry standard
Premium instrument panels (IPs) contain passenger airbag (PAB) systems that are typically comprised of a stiff plastic substrate and a soft ‘skin’ material which are adhesively bonded. During airbag deployment, the skin tears along the scored edges of the door holding the PAB system, the door opens, and the airbag inflates to protect the occupant. To accurately simulate the PAB deployment dynamics during a crash event all components of the instrument panel and the PAB system, including the skin, must be included in the model. It has been recognized that the material characterization and modeling of the skin tearing behavior are critical for predicting the timing and inflation kinematics of the airbag. Even so, limited data exists in the literature for skin material properties at hot and cold temperatures and at the strain rates created during the airbag deployment. This paper presents tensile test results of one typical skin material conducted at four different strain rates of 0.01/s
Side Door closing velocity is one of the key customer touch points which depicts the build quality of the vehicle. Side door closing velocity results from the interaction of different parts like door and body seals, door check arm, door hinge, latch, and alignment of door hinge axis. In this paper, a high door closing velocity issue in a sports utility vehicle is discussed. Physical studies are carried out to understand each parameter in door closing velocity and its contribution is defined in terms of velocity. Many physical trials are conducted to conclude the contribution of each parameter. Studies revealed that the body and door seal are contributing around 70% of door closing velocity. Check arm and hinge axis deviation are contributing around 10% of the door closing velocity. Physical trials are conducted by reducing the compression distance of the body seal. Around 13.5 to 20 % reduction in door closing velocity is observed with a 3mm reduction in compression distance of the
The passenger car segment has been extremely competitive and automotive OEMs are thriving to provide superior customer experience. Door closing is an event that requires slamming of the door with a certain velocity to get the door latched. A good latching provides that thud sound and assurance of the door getting closed for an SUV. While the door is closed, it pushes the volume of air inside the cabin. As the amount of air moved in is proportionate to the size of the door it becomes more critical for the SUV segment of vehicles to ensure the air extraction path is efficient. Else, steep pressure rise inside the cabin causes severe discomfort to the passengers sitting inside the vehicle. Current work focused on the process of simulation of cabin pressure while door closing, implementing changes based on results and validating with test results. Test results are in close correlation with simulation predictions. Also, it emphasizes that body panel changes made to improve the airflow path
With higher customer expectations and advances in vehicular technology, automotive functions and operations are becoming more intelligent. Electric self-priming door locks fulfil the automatic closing and locking of side doors, hatchback doors, sliding doors, liftgates, decklids, etc. They are widely implemented into high-end models for the elegance of soft closing. In the list of perceived vehicle qualities, door-closing sound quality has been one of the important customer concerns in the market. In comparison to conventional door locks, electric self-priming door locks add another dimension to the development of sound quality for noise, vibration, and harshness (NVH) efforts. In this article, the characteristics of door-closing sound involving self-priming door lock mechanisms are analyzed and illustrated. Human perception of different sounds from the self-priming door lock working process is ranked by subjective evaluations. For typical door closing sounds associated with the self
Thermoelectric devices are already used widely in thermal management applications in the aerospace and defense industries. While state-of-the-art electronics - such as night vision equipment, infrared detectors and avionics - utilize these devices for thermal regulation, efficiency limitations have curbed their use in other advanced applications. A recent breakthrough in material technology has unlocked the potential of thermoelectrics (TE), opening up new doors for TE systems by delivering dramatic increases in heating and cooling efficiency and capacity
Scientists, including an Oregon State University materials researcher, have developed a better tool to measure light, contributing to a field known as optical spectrometry in a way that could improve everything from smartphone cameras to environmental monitoring
A research team has developed a new microfluidic chip for diagnosing diseases that uses a minimal number of components and can be powered wirelessly by a smartphone. The University of Minnesota — Twin Cities innovation opens the door for faster and more affordable at-home medical testing
This SAE Aerospace Standard (AS) defines interface configurations for the ground air conditioning service connection on commercial transport aircraft. In addition, it defines the clearances required to accommodate the connection of ground air conditioning hose couplings. Two types of service connections are included. The Type A connection (Figure 1) is a slotted ring with integral locking pads and is comparable to the MS33562 connection. The Type B connection (Figure 2) is a flanged tube with external locking lugs (Figure 3). The Type B connection has the same interface dimensional requirements as the Type A connection
This SAE Aerospace Information Report (AIR) covers information relative to ULDs (Unit Load Devices) container and pallet configurations, maximum usable container, pallet and bulk compartment volumes and tare weights for the lower deck of various wide-body aircraft. Bulk compartment volumes are also included for standard-body aircraft
In swing door design, the check strap plays an important role since it assists the door opening and closing maneuvers and stops the door in case of extra opening events. Computer-Aided-Engineering is extensively used to simulate door opening and closing events for designing the door structure in terms of durability performance and closing effort. However, in customer perspective, other phenomena related to check strap subsystem need to be investigated, as the onset of door vibration in opening and closing phase. This paper describes a methodology, based on the Finite Element approach, able to simulate the opening and closing maneuver of a swing door, including detailed check strap mechanism through a sequential implicit-explicit strategy. Such methodology can reproduce in virtual door vibrations caused by check strap operation. Since this oscillatory phenomenon could be potentially unacceptable in terms of perceived quality, a component optimization may be necessary. The methodology
The purpose of this SAE Aerospace Recommended Practice (ARP) is to standardize locations of aircraft ground service connections to accommodate the trend toward fixed systems, which use the passenger boarding bridge and/or underground “pop-up” or pit systems as a source of utilities. It must be recognized that, in standardizing the locations of the aircraft service connections, they must continue to be served efficiently in those instances where mobile ground support equipment is used. There is an ever increasing number of fixed installations for aircraft servicing. The objectives to be met by standardizing the locations of the aircraft service connections are the following
Squeak and rattle concerns accounts for approximately 10% of overall vehicle Things Gone Wrong (TGW) and are major quality concern for automotive OEM’s. Objectionable door noises such as squeak and rattle are among the top 10 IQS concerns under any OEM nameplate. Customers perceive Squeak and rattle noises inside a cabin as a major negative indicator of vehicle build quality and durability. Door squeak and rattle issues not only affects customer satisfaction index, but also increase warranty cost to OEM significantly. Especially, issues related to door, irritate customers due to material incompatibilities. Squeaks are friction-induced noises generated by stick-slip phenomenon between interfacing surfaces. Several factors, such as material property, friction coefficient, relative velocity, temperature, and humidity, are involved in squeak noise causes. For example, door armrest leather is exposed longer to sunlight and when customer places his hand on the armrest, an annoying squeak
This paper deals with vehicle door 120-degree joint rust issue and water leak faced in most of SUV cars. Generally based on vehicle segment its styling curves and exterior design are defined. A Sedan or Hatchback is provided with curves to show its fluidic design but a SUV is provided with Straight lines to show its aggressive look. In existing condition door frame Joint has sharp joints where weld bead is added to prevent rust in joint area, but still improper seating of weather strip on weld bead cause water leak. Door’s A Pillar Frame and Horizontal Frame match at 120 degree joint edges are chamfered straight to match perfectly. Weld bead runs over the matching profile to join it. But weld bead project over the Frame surface and affects weather strip seating & results in poor sealing. Adhesive added for better sealing also follows the same path on bead and create a path way for water entry. Thus in long run this water stagnates and cause chronic rust issues in frame. This in turn
Automotive door seal has an important function which is used extensively where interior of the vehicle is sealed from the environment. Problem with door seal system design will cause water leakage, wind noise, hard opening or closing of doors, gap and flushness issue which impair customer’s satisfaction of the vehicle. Moreover, improper design of seal can lead to difficulty in installation of door seal on body panel. The design prudence and manufacturing process are important aspect for the functionality and performance of sealing system. However, the door sealing system involves many design and manufacturing variables. At the early design stage, it is difficult to quantify the effect of each of the multiple design variables. As there are no physical prototypes during rubber profile beading-out stages, engineers need to carry out non-linear numerical simulations that involve complex phenomena as well as static and dynamic loads for door seal. This paper presents a digital simulation
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