| Summary: | 碩士 === 國立屏東科技大學 === 車輛工程系所 === 105 === Abstract
Student ID:M10438020
Title of Thesis: Finite element analysis of car roll-cage during impact and its optimal structure design
Total Pages:78
Name of Institute: National Pingtung University of Science and Technology
Name of Department: Department of Vehicle Engineering
Date of Graduation:July, 2017 Degree Conferred: Master
Name of Student:Chen-Chi Tzou Adviser: Dr. Chin-Lung Chang
The Contents of Abstract in this Thesis:
The paper is according to the definition and specification on the roll-cage’s structure and reinforcements of FIA standards to form different roll-cage structure with replacing the different door bars, roof reinforcements and backstays design. The roll-cage impacting simulation is based on the car rollover accident of trip-over and flip-over, and uses the concept of engineering structure optimization of minimize the deformation as a benchmark of strength. Using the Adams software, the forward speed of the vehicle impacting on the ground in the FMVSS-208 rollover test is 5 m/s. Referenced to the configuration of the FMVSS-216 roof impact test, the car impacting on the ground was simulated in speed 5 m/s and set the impact block as total car weight. Meanwhile, an equivalent impacting test for the test of roll-cage structure’s strength will be established. Modal analysis results show that the roll- cage structure can avoid the engine operating frequency and the frequency of the car and the road to avoid resonance causing damage. The impacting simulation results show that the optimal roll-cage reinforcements is as follows: the inverted triangle type of the door bars, the X type of roof reinforcements and the inverted V type of backstays. Finally, according to the FIA specification, the two structure of roll cage were combined with optimal reinforcements to compare its strength. The optimal structure of roll-cage is reinforcing with the inverted triangle type of the door bars, the V type of the roof reinforcements and inverted V type of backstays.
Keywords: Roll-cage, Finite Element Simulation, Reinforcement, optimal structure
|
|---|
