嗨,迪恩,我遇到了复合设计的另一个奇怪的方面,可能只与机翼几何/梁设计有关,但我相信它在叠层计算中有所不同,特别是在“I梁”梁的重量和高度。这是我的困境....以目前的工字钢几何形状,2的厚度。和1 Vert。平面的工字梁是基于层压板标签中规定的层压板厚度。它们在整个梁截面上是均匀的。当设计一个非常小的Spar时,这可能是有问题的。例子:约。4mm in height, 8mm Horiz. width and .5mm thick. Because the current I-Beam Geometry carries the .5mm thickness over the entire "I" cross section, I have to reduce the height of the Vert. section by 1mm so it will fit into a Rotor/Wing section. By reducing the Vert. height I am unable to calculate a "True" Max. Deflection value. Ideally, being able to adjust the thickness of the Horiz. planes of the I-Beam would enable me to calculate a more precise Spar using the correct height. A typical Spar Lay-up for me would be so: ]!!!![ (single woven CF layers L&R with 4 or 5 layers UD in the middle). The Horiz. planes of the I-Beam would typically be from .06mm to .1mm thick. The 1mm may not sound like much in the grand scheme of things but it can make a huge difference in a small high load Spar/Wing Structure as it can equate to 200+mm³ of Laminate along the Spar. I don't know if it's possible to change the I-Beam Geometry or not...It's just another thing that would make us "Aircraft" guy's lives a little easier...
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