ISO 26203-1:20 18规定了测试金属板材料的方法，以确定高应变率下的应力应变特性。本文件涵盖了弹性杆型系统的使用。 应变率范围在10？3和103秒？基于实验和数值计算，例如耐撞性的有限元分析（FEA）工作，1被认为与车辆碰撞事件最相关。 为了准确评估车辆的耐撞性，在应变率高于10？3秒？1是必不可少的。 本试验方法涵盖了102 s以上的应变率范围？1. 注1在应变率低于10时？1秒？1、ISO 7500规定的准静态拉力试验机？1和ISO 6892？1可以应用。 注2本试验方法也适用于除此处考虑的扁平试件以外的拉伸试件几何形状。

ISO 26203-1:2018 specifies methods for testing metallic sheet materials to determine the stress-strain characteristics at high strain rates. This document covers the use of elastic-bar-type systems. The strain-rate range between 10^？3 and 10³ s^？1 is considered to be the most relevant to vehicle crash events based on experimental and numerical calculations such as the finite element analysis (FEA) work for crashworthiness. In order to evaluate the crashworthiness of a vehicle with accuracy, reliable stress-strain characterization of metallic materials at strain rates higher than 10^？3 s^？1 is essential. This test method covers the strain-rate range above 10² s^？1. NOTE 1 At strain rates lower than 10^？1 s^？1, a quasi-static tensile testing machine that is specified in ISO 7500？1 and ISO 6892？1 can be applied. NOTE 2 This testing method is also applicable to tensile test-piece geometries other than the flat test pieces considered here.