标题：Impact Analysis of Geogrid Node Size in Stretch Forming
作者机构：[Yi, ZH]Shandong Univ, Sch Civil Engn, Jinan 250061, Peoples R China.
会议名称：International Conference on Applied Mechanics and Materials (ICAMM 2012)
会议日期：NOV 24-25, 2012
来源：APPLIED MECHANICS AND MATERIALS I, PTS 1-3
关键词：Plastic geogrid; Node fracture; Stretch forming; Punching size;; Numerical simulations
摘要：Numerical simulations are done for stretch forming of uniaxial geogrid. And influence of different punching radius on the stress and strain of geogrid are studied. It shows that the maximum stress and strain in tensile process appear at the corner of the circle and straight edge. And the biggest stress is decreased with the radius. At the same time, radius increases reduce the deformation along the stretching direction on some extent. Based on this, a new optimization method for geogrid stretch forming is proposed. The shapes and sizes of punching can change the stress and strain distribution in the geogrid, which can reduce the probability of defect in the process of stretch forming.