Load Transfer Analysis of a Bus Bay Section Under Standard Rollover Test Using U*M Index

Bus rollover accidents are receiving increasing attention due to the associated high fatality rate. In order to improve the bus structural performance during the rollover collision, it is necessary to investigate how the impact force is transferred within the bus superstructure. This paper introduced a method for studying the load transfer behavior of the bus superstructure during the standard rollover test by using the U * M index. A bus bay section was used as the sample structure to demonstrate the proposed method. The result of the paper reveals that the load transfer analysis based on the U * M index can provide engineers with the insight of the structural issues and the direction to improve the structural performance, which cannot be accomplished through the conventional finite element analysis.

[1]  Christine Q. Wu,et al.  Demonstration of the effectiveness of U*-based design criteria on vehicle structural design , 2018 .

[2]  Fengxiang Xu,et al.  Design optimization of thin-walled circular tubular structures with graded thickness under later impact loading , 2017 .

[3]  S. Li,et al.  Effective bending stiffness for plates with microcracks , 2003 .

[4]  Yi Li,et al.  Experimental and Numerical Study of Rollover Crashworthiness of a Coach Body Section , 2012 .

[5]  Hirokazu Kobayashi,et al.  Introduction of New Concept U*sum for Evaluation of Weight-Efficient Structure , 2011 .

[6]  Igor Telichev,et al.  Extensions of the U* theory for applications on orthotropic composites and nonlinear elastic materials , 2017 .

[7]  Keith Friedman,et al.  Rollover protection for occupants of heavy truck sleeper cabs , 2015 .

[8]  Jordi Arbiol,et al.  Development of Rollover-Resistant Bus Structures , 1997 .

[9]  Igor Telichev,et al.  Load Transfer Index for Composite Materials , 2015 .

[10]  Toshiaki Sakurai,et al.  Expression of Load Transfer Paths in Structures , 2005 .

[11]  J. Arora,et al.  New concepts of transferred and potential transferred forces in structures , 2001 .

[12]  Qingguo Wang,et al.  Experimental Study of U* Index Response to Structural and Loading Variations , 2015 .

[13]  C. C. Liang,et al.  Analysis of bus rollover protection under legislated standards using LS-DYNA software simulation techniques , 2010 .

[14]  Cho-Chung Liang,et al.  Bus rollover crashworthiness under European standard: an optimal analysis of superstructure strength using successive response surface method , 2009 .

[15]  Qingguo Wang,et al.  A new load transfer index () with considering six degrees of freedom and its application in structural design and analysis , 2018 .

[16]  Pietro Cornetti,et al.  Static–kinematic duality and the principle of virtual work in the mechanics of fractal media , 2001 .

[17]  Ali Yeilaghi Tamijani,et al.  Determination of Load paths in Plates and Shells Using Load Path Function , 2017 .

[18]  Kunihiro Takahashi,et al.  Load Transfer in Truck Cab Structures under Initial Phase of Frontal Collision , 2010 .

[19]  Christine Q. Wu,et al.  Experimental validation of the U* index theory for load transfer analysis , 2017 .

[20]  Mehmet A. Guler,et al.  The influence of seat structure and passenger weight on the rollover crashworthiness of an intercity coach , 2007 .

[21]  Donald W. Kelly,et al.  Load paths and load flow in finite element analysis , 2001 .

[22]  Toshiaki Sakurai,et al.  Load Path Optimization and U * Structural Analysis for Passenger Car Compartments under Frontal Collision , 2003 .