摘要
按杂交/混合有限元方法,根据Reissner-Mindlin板理论,建立了12-节点C^0类板弯曲单元HP 12。数值研究表明,HP 12不含多余机动模式,当趋于薄板极限时,不出现“自锁”,且弯矩与位移响应良好。本文还指出了CH 1单元含有多余机动模式的原因。
Based on the hybrid/mixed finite element method together with the Reissner-Mindlin Plate bending theory, a 12-node C^0-Plate bending quadrilateral element HP12 is formulated. Numerical study demonstrates favorably good deflexion and moment responses over existing counterparts. More important, HP 12 is Proved free from spurious kinematic mode, and induces no shear loc- king difficulties in thin plate limit. Rank defficiency with CH 1 is also discussed.
出处
《西南交通大学学报》
EI
CSCD
北大核心
1989年第2期80-87,共8页
Journal of Southwest Jiaotong University
基金
国家自然科学基金
编号 1870358
