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首页> 外文期刊>International Journal of Automotive Technology >New tension mechanism for high-speed tensile testing machine
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New tension mechanism for high-speed tensile testing machine

机译：高速拉伸试验机的新型拉伸机构

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摘要

As concerns of dynamic tensile measuring, a new tension mechanism driven by liner motor in high-speed tensile testing machine is presented. It satisfies the requirements for testing the dynamic tensile properties of plastic materials with strain rates from 1 to 100 s(-1), which is relatively difficult to test for currently available machines. For this purpose the idle stroke principle is used to realize the dynamic load of plastic material with static grip. Computer aided engineering is used: i) to analyze and optimize the tension mechanism thus allowing reducing the system shock caused by collisions. ii) to avoid the influence of plastic materials specimen stress and strain uniformity on the measuring system. The analysis results agreed well with the established empirical relationships based on experimental evidence. Two sets of experiments for different strain rate tensile were conducted thus allowing proving the reliability and credibility of the designed tension mechanism.
机译：针对动态拉伸测量的问题，提出了一种新型的由高速拉伸试验机的衬套电动机驱动的拉伸机构。它满足测试应变速率为1到100 s（-1）的塑料材料的动态拉伸性能的要求，这对于当前可用的机器而言相对较难测试。为此，使用空行程原理来实现具有静态抓地力的塑料材料的动态负载。使用计算机辅助工程：i）分析和优化张力机制，从而减少碰撞引起的系统冲击。 ii）避免塑料材料试样的应力和应变均匀性对测量系统的影响。分析结果与基于实验证据建立的经验关系非常吻合。进行了两组针对不同应变率拉伸的实验，从而证明了所设计拉伸机构的可靠性和可信性。

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