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# r& i. C7 G! }/ { { {' T提示：带温度载荷的静态结构分析。1 L) ]8 x3 | C, ~/ N6 E" N
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Title Thermally Loaded Support Structure1 U, t* i6 i& {2 b8 J9 [
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. W! L8 N- D! J' A( U- p| 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 |
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Test Case1 _" v+ F& ^8 e) H7 {
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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.
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0 j1 {1 A) b) bFigure 3.1 Support Structure Problem Sketch' }* q, _! M$ M* `( _8 ?/ n
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, i7 T: H% {$ M3 v# i: Y8 W( a| 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. 6 h! P" P: \* e# k* E. D
# {, s; w3 q, h) U3 H UResults 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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' C& H/ l4 v/ \5 I: n[ 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