THERMAL STRESSES IN LAMINATED BEAMS
THERMAL STRESSES IN LAMINATED BEAMS
复制标题
层压梁中的热应力
DOI：
10.1080/01495738208942136
复制
发表时间：
1982
影响因子：
2.8
通讯作者：
T. Gerhardt
中科院分区：
文献类型：
--
作者：
Du Chen;Shun Cheng;T. Gerhardt
摘要本文考虑由不同材料层由薄胶粘剂粘合在一起的层合梁。计算了梁受到温度刺激所产生的应力。用二维弹性理论结合互补能量变分定理来处理这一问题。建立了一组控制微分方程，满足梁的无应力面和端部的边界条件。层间法向应力和剪切应力的分布计算表明，高应力强度出现在梁的端部。因此，在层合结构单元分析中，末端条件的满足是至关重要的。分层破坏-当它发生时-可能会从梁的末端开始，这与观察到的无应力末端条件下层压结构元件的破坏一致。
Abstract This paper considers laminated beams consisting of layers of different materials fastened together by thin adhesives. The stresses that result from subjecting the beam to temperature stimuli are calculated. The problem is treated by two-dimensional elasticity theory in conjunction with the variational theorem of complementary energy. A pair of governing differential equations is developed, and boundary conditions concerning stress-free surfaces and ends of the beam are satisfied. The calculation of the distributions of interlaminar normal and shear stresses shows that high stress intensity occurs in the end zones of the beam. Thus, the satisfaction of end conditions is of prime importance in the analysis of laminated structural elements. Delamination failure-when it occurs - will probably start at the ends of the beam, This agrees with observed failures of laminated structural elements subjected to stress-free end conditions.
DOI：
--
发表时间：
1962
期刊：
--
影响因子：
--
作者：
F. B. Hildebrand
通讯作者：
F. B. Hildebrand