Some special phenomena and preliminary interpretations about measured strain signals from high-speed impact tests

Some special phenomena and preliminary interpretations about measured strain signals from high-speed impact tests
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高速冲击试验实测应变信号的一些特殊现象及初步解释

DOI:
10.1504/ijstructe.2012.045043
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发表时间:
2012-01
影响因子:
1.3
通讯作者:
Zhang Chunwei, Hao Hong, Tarasov Boris, Zhu Xinqu
Zhang Chunwei, Hao Hong, Tarasov Boris, Zhu Xinqu
中科院分区:
--
文献类型:
--
作者:
Zhang Chunwei, Hao Hong, Tarasov Boris, Zhu Xinqu

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在过去的几十年中,人们在高速冲击试验方面投入了大量精力,以研究金属、合金、陶瓷、聚合物、岩石、混凝土、砖、砂浆等材料的动态性能。冲击或冲击试验的目的是研究工程材料在高应变率下的碰撞相关或爆炸相关行为。根据不同的测试目的,有时应变速率可能非常高,即每秒高达10,000单位应变。西澳大利亚大学土木与资源工程学院最近对钢材和混凝土材料进行了一些冲击试验,以校准创新的爆炸模拟器装置的冲击载荷能力。从测试结果中,观察到并报告了测量应变信号的一些特殊现象,这可能对正确描述材料动态性能产生不可避免的影响。为了避免误导后续的收购分析......
During the last several decades, considerable efforts have been devoted to high-speed impact tests to investigate dynamic properties of materials, such as metal, alloy, ceramic, polymer, rock, concrete, brick, mortar etc. The purpose of impact or shock test is to study the crash-relevant or blast-relevant behaviour of engineering materials under high strain rates. According to different test purposes, sometimes the strain rate could be extremely high, i.e., up to 10,000 unit strain per second. In the School of Civil and Resource Engineering at the University of Western Australia, some impact tests on steel material and concrete material have been carried out recently, to calibrate the impact loading ability of an innovative blast simulator device. From the test results, some special phenomena about measured strain signals were observed and reported, which may have an unavoidable influence on properly describing material dynamic properties. In order to avoid misleading the consequent analysis on acquiring ...
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