中および高ひずみ速度域での材料試験用試験片の大きさについて

概要

論文の詳細を見る
It is desired to obtain the material properties in a wide range of strain rates and strain to be used for numerical simulations of car crushing, high speed forming and others. To conduct dynamic material testing, adapting suitable specimen size and shape for each testing strain rate is important to obtain the results with good accuracy and interchangeability for a wide range of strain rates. Any standard for the specimen size and shape, however, is not yet established except quasistatic testing. In this study, the upper limit of the gauge length of the test piece, to keep the testing error under a few percent, for the dynamic tensile testing in the strain-rate range from 10^2 to 10^4 s^-1 were obtained through a series of numerical simulations.
社団法人日本機械学会の論文
2002-12-25