The Effects of Internal Friction on Automotive Latch and Release System Behavior

2019-01-5025

04/18/2019

Features
Event
Automotive Technical Papers
Authors Abstract
Content
Physical tests and analysis of a typical automobile latch and outside handle release mechanism are performed to determine the effects of friction on the systems dynamic response. An automobile side door outside handle, outside handle rod linkage, and latch are mounted to a rigid fixture that is constrained by bearings to a “drop tower.” The fixture is released from controlled heights onto a compliant impact surface resulting in a constant duration acceleration transient of varying amplitude. An instrumented door latch striker is designed into the fixture to engage the latch. The pre-drop interface load between the latch and striker is adjusted allowing its effect on the dynamic behavior to be characterized. The latch position and the interface load between the latch and striker are monitored throughout the test. The results of the test show that friction forces internal to the latch significantly affect the quasistatic and dynamic behavior of the latching system.
Meta TagsDetails
DOI
https://doi.org/10.4271/2019-01-5025
Pages
9
Citation
Salmon, J., and Eikey, C., "The Effects of Internal Friction on Automotive Latch and Release System Behavior," SAE Technical Paper 2019-01-5025, 2019, https://doi.org/10.4271/2019-01-5025.
Additional Details
Publisher
Published
Apr 18, 2019
Product Code
2019-01-5025
Content Type
Technical Paper
Language
English