三次元物体の動的応力解析 : 球状空かを有する円柱棒の動的応力集中係数

概要

論文の詳細を見る
The reflection and interference of stress-waves play important roles in dynamic cases. It is very desirable to study the time variation of the stress distribution, and especially the value of dynamic stress concentration factors, in three-dimensional solid bodies. Hence, we have analyzed the stress propagation and the dynamic stress concentration phenomena around a spherical cavity in a cylindrical bar by utilizing the strain gage method, the dynamic photoelastic method and also the finite element method. Emphasis was laid on the dynamic stress concentration analysis of bodies with inner cavities such as those often found in welded parts or castings. The simulation was achieved by using test models of composite specimen geometry in which a spherical cavity was introduced by a variation of the sandwich method. We found that the three-dimensional dynamic stress concentration factors obtained by the present three methods are all near the static stress concentration factors already reported for similar specimen geometries.
一般社団法人日本機械学会の論文
1986-05-25