127 ダイナミック硬さによる応力測定法に関する解析的検討(GS01 シミュレーション・不安定変形)

概要

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Stress estimation method using the dynamic hardness testing was analytically investigated. The FEM stress analysis was performed by the ABAQUS code in two-dimensional plain-strain condition taking into account of the material non-linearity with surface element. The Vickers indentor made of diamond was modeled as a rigid body in the analysis. The indentor was pressed on the body with several kinds of pre-stressed conditions in tension and compression to clarify the detectability of the stress (strain) condition by the dynamic hardness testing. The obtained dynamic hardness was compared with experimental data as a function of pre-stressed condition. From this study, it was found that the dynamic hardness increases with increasing compressive pre-stressed condition and decreases with increasing tensile pre-stressed condition. Therefore, it is concluded that the dynamic hardness testing aiming at the stress measurement is applicable to the measurement of complex stress profile with tensile and compressive stresses.
一般社団法人日本機械学会の論文
2001-11-27