Math Problem Statement
某片式起重单钩的额定起重量为450kN,工作时沿受力方向的长度为1.398m,现在拟采用模型试验的方法对该吊钩进行极限承载力的测试和评估。考虑试验机的空间和加载能力,将模型沿受力方向的长度定为 34.95cm,模型所用材料与原型相同,实验得到该吊钩模型不产生屈服现象的最大承载力为32kN,请根据相似理论给出几何和物理(泊松比、弹性模量、应力) 相似关系, 并推算出实际单钩的极限承载力和安全系数。
Solution
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Math Problem Analysis
Mathematical Concepts
Similarity Theory
Material Mechanics
Formulas
λ = 原型长度/模型长度
λ_F = λ^2
F_极限 = λ_F * F_模型
安全系数 = F_极限 / F_额定
Theorems
Geometric Similarity
Physical Similarity
Suitable Grade Level
University Level (Engineering or Mechanics)
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