复合材料格栅圆柱结构优化设计

Optimization design of composite cylindrical lattice structure

复合材料格栅圆柱结构是由连续纤维缠绕的斜向和环向肋组成的结构。介绍了一种轴压作用下复合材料格栅圆柱结构的设计方法,该模型是在满足格栅结构整体屈曲要求、斜向肋承受压缩强度要求以及2个交叉点间肋段的局部屈曲3个约束条件的情况下,通过引入格栅结构整体屈曲、局部屈曲及压缩强度安全系数,并经过对数学模型的变换处理,使得格栅结构的结构重量最小,得到格栅结构的设计参数。该方法在格栅结构的设计与优化中非常有效。

Anisogrid （ anisotropic grid） composite lattice structure can be formed by means of continuous filament winding a- long helical ribs and hoop ribs. A new design method was developed for composite lattice cylindrical structure. The method satisfies three constraint conditions, i. e. integral buckling of lattice structure, compressive strength of helical ribs and local buckling between two cross points of helical ribs. By introducing s^fety coe^cients of integral buckling,local buckling, compressive strength and per- forming transformation treatment of the mathematical model to minimize the weight of lattice structure, design parameters of lattice structure were obtained. The method is effective for design and optimization of lattice structure.