A Comprehensive Study of vehicle side door structure and window glass displacement during slam for refinement

In the vehicle closures validation process, the displacements in its structure and window glass have significant impact on its service life. The objective of this paper is to develop a test case using instrumentation and data acquisition for measuring the vehicle door structure and its window glass displacement along the lateral direction. This measurement support for understanding the door and window glass displacement impact on its primary and secondary rubber seals, striker, check arm, hinges, and its structural rigidity. The door mechanisms also get affects by door displacement which results to significant deterioration in its performance. The test setup comprises of sensors with required range and accuracy connected with data acquisition system by selecting appropriate sampling rate. The sensors placed on window glass and on door structure top corner during the measurement. Different window glass positions like full close, half close and fully opened considered for the study because the support the glass get from waist and run seals vary based on its position and the cabin pressure damping effect have significant impact on door slam operation. Also, different vehicle segments selected for the study to have a detailed analysis. The acquired raw data processed further in suitable data analysis software to get door structure and its window glass displacement. This processed data helps on identifying the scope of improving door rigidity which ease door smooth operation and improves hinge and check arm life. The displacement results of front and rear doors frame and glass in different glass positions and in different vehicles are discussed in this paper in detail.