货车前部钻碰防护装置的设计与性能分析

Design and Performance Analysis of Frontal Under-Run Protector of Truck

参照欧洲ECE-R93法规,在货车前下部设计安装了前部钻碰防护装置(Front Under-run Protector,FUP)。运用非线性有限元理论建立了货车FUP的有限元模型,利用与乘用车等质量的刚性体模型与FUP进行撞击,研究结构在冲击载荷作用下的防钻性能、能量吸收与变形特性。结果表明,货车安装FUP后,能有效防止乘用车钻入;碰撞中FUP总成吸收了大量冲击能量,而且纵向支架是主要的吸能部件。

Referring to Europe regulation ECE-R93, front under-run protector （FUP） was designed and installed on the truck in order to settle the issue of under-run. The finite element model of truck＇s FUP was set up based on nonlinear finite element theory. By making use of rigidity model whose mass is equal to the vehicle and FUP, under-run preventing performance, energy-absorbed performance and deformation characteristics of FUP were studied under impacting loading. Results indicate that FUP can prevent passenger vehicle from running under the truck. More energy has been absorbed by FUP assembly and longitudinal bracket of FUP is the more important component which could absorb energy.