公开(公告)号：US11959829B2

公开(公告)日：2024-04-16

申请号：US16975116

申请日：2019-05-30

Applicant: CENTRAL SOUTH UNIVERSITY

Inventor： Ping Xu ,  Shuguang Yao ,  Bowen Tan ,  Yong Peng ,  Zhaijun Lu ,  Chengming Sun ,  Kai Xu ,  Qi Huang

IPC: G01M17/08 ,  B61G5/10 ,  G01M7/08

CPC classification number: G01M17/08 ,  B61G5/10 ,  G01M7/08

Abstract: A startup stage protection device used in Electric Multiple Unit (EMU) train coupler experiment is provided between two test cars. The startup stage protection device is arranged between and tightly abuts two test cars at the starting stage of the experiment to receive a compressing force in place of the coupler. The startup stage protection device separates from the two test cars after the end of the starting stage.

公开(公告)号：US20250131162A1

公开(公告)日：2025-04-24

申请号：US19006304

申请日：2024-12-31

Applicant: CENTRAL SOUTH UNIVERSITY

Inventor： Yong Peng ,  Gongxun Deng ,  Guangjun Gao ,  Song Yao ,  Suchao Xie ,  Ping Xu ,  Shuguang Yao

IPC: G06F30/23 ,  G06F30/15 ,  G06F119/14

Abstract: The disclosure provides a construction method including steps of: constructing a detailed model and a simplified model of the rail vehicle using finite element method based on the three-dimensional structure of the rail vehicle; initially setting the simplified model in accordance with the detailed model, including specifying materials, mechanical properties parameters, and mass point; setting different simplification thickness ratio to obtain a plurality of sets of the simplified models, designing longitudinal and lateral collision conditions, and in each type of the collision conditions, performing collision simulations on the detailed model and each set of the simplified models under each thickness ratio to obtain respective collision response curves; calculating a total CORA value corresponding to the plurality of sets of the simplified models; selecting an optimal simplified model from n sets of the simplified models with the highest total CORA values.