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翼盒为机翼主要承力部件,优化潜力较大,是机翼结构优化设计的重点对象。在翼盒结构尺寸优化设计阶段,考虑到计算效率和技术成熟度等因素,往往只重点考虑静强度和总体变形约束。优化结果存在不满足颤振和局部刚度要求的风险。基于刚度指标,通过HyperWorks脚本二次开发,建立了关联结构参数的机翼剖面刚度响应。实现了机翼结构尺寸优化设计中各站位处的刚度约束,为如何在机翼结构优化设计中考虑颤振刚度约束提供了新的方法。
The wing box is the main bearing component of the wing, which has a great potential for optimization and is the key target of the structural optimization of the wing. In the wing box structure size optimization design stage, taking into account the computational efficiency and technology maturity and other factors, often only focus on static strength and overall deformation constraints. There is a risk that the optimization result will not meet the requirements of chatter and local stiffness. Based on the stiffness index, through the secondary development of HyperWorks script, the profile stiffness response of the wing is established. The rigid constraint of each station position in the optimization design of the wing structure is achieved, which provides a new method for how to consider the flutter stiffness constraint in the wing structure optimization design.