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提示：带温度载荷的静态结构分析。; H$ Y0 n5 H! }
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Title Thermally Loaded Support Structure
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Overview
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| 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 |
( Q, Z% f2 K7 B; t: n/ v. Z/ A+ gTest Case
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J7 Y/ N/ M+ Y+ C8 U1 DFind 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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. J( d& t3 ]& w0 W& D" JFigure 3.1 Support Structure Problem Sketch7 x. K$ `0 m. K
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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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; q6 T: T% s# f% J ?4 m4 FAnalysis 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. * G: S8 Q9 C; W/ r
' \9 `+ G3 y" d3 ~% H8 ^, FResults 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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[ 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