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( u, O7 g9 q/ `提示：带温度载荷的静态结构分析。
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/ C7 |2 \+ G1 S1 PTitle Thermally Loaded Support Structure7 X# d+ v' f4 `: i J$ W% R" L
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Overview
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& k5 C7 z( k A9 O8 G| Reference: | S. Timoshenko, Strength of Material, Part I, Elementary Theory and Problems, 3rd Edition, D. Van Nostrand Co., Inc., New York, NY, 1955, pg. 30, problem 9. | | Analysis Type(s): | Static, Thermal Stress Analysis |
: }% z2 P+ n- P/ HTest Case
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Find the stresses in the copper and steel wire structure shown below. The wires have a cross-sectional area of A. The structure is subjected to a load Q and a temperature rise of ΔT after assembly. 4 O8 @$ b! y9 U0 a% C3 D8 A( \
' y0 [' T8 \. |5 _7 n3 @Figure 3.1 Support Structure Problem Sketch* e/ c" z5 z+ h5 G$ b7 E
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| Material Properties | | Ec = 16 E6 psi | | αc = 92 E-7 in/in-°F | | Es = 30 E6 psi | | αs = 70 E-7 in/in-°F |
| | Geometric Properties | | A = 0.1 in2 |
| | Loading | | Q = 4000 lb | | ΔT = 10°F |
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Analysis Assumptions and Modeling NotesLength of wires (20 in.), spacing between wires (10 in.), and the reference temperature (70°F) are arbitrarily selected. The rigid lower beam is modeled by nodal coupling. 4 {5 ]# N! W" o, a$ n% `
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Results Comparison | Target | ANSYS | Ratio | | Stress in steel, psi | 19,695. | 19,695. | 1.000 | | Stress in copper, psi | 10,152. | 10,152. | 1.000 |
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5 D1 J: s# i# T& c[ 本帖最后由 tigerdak 于 2007-11-9 15:28 编辑 ] |
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发表于 2007-11-6 15:12:01