Influence of Soft Filler on Stress Concentration Factor of Elliptic Holes in a Rectangular Plate

• Published in: Transactions of Tianjin University Vol. 18; no. 2; pp. 117 - 120
• Main Author: 杨林虎 朱涵 谭党联
• Format: Journal Article
• Language: English
• Published: Heidelberg Tianjin University 01.04.2012; Department of Civil Engineering, Tsinghua University, Beijing 100084, China; School of Civil Engineering, Tianjin University, Tianjin 300072, China%School of Civil Engineering, Tianjin University, Tianjin 300072, China
• Subjects: Engineering; Humanities and Social Sciences; Mechanical Engineering; multidisciplinary; Science; 应力集中系数; 弹性模量; 形状因子; 敏感指数; 有限元模型; 椭圆孔; 矩形板; 软性填料; elasticity modulus; shape factor; stress concentration factor; soft filler; elliptic hole
• ISSN: 1006-4982; 1995-8196
• DOI: 10.1007/s12209-012-1614-z

Finite element models were established to analyze the influence of soft filler on stress concentration for a rectangular plate with an elliptic hole in the center. The influence was quantified by means of stress concentration fac- tor （SCF）. Seven shape factors of the elliptic hole and three levels of elasticity modulus of the soft filler were consid- ered. The reduction coefficient and sensitivity index of SCF are the two indicators in evaluating the influence of soft filler. It was found that the reduction coefficient of SCF increases significantly as the shape factor and the elasticity modulus of the filler increase, indicating that soft filler can reduce the concentrated stress effectively, especially when the shape factor is great. Analysis for the sensitivity index of SCF indicates that SCF is more sensitive to materials with small elasticity modulus than to materials with large one.