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提示：带温度载荷的静态结构分析。/ a" j+ k" |+ \2 W( ?2 m8 W) }: g
* p+ I9 N" C$ |- d7 K/ |$ \Title Thermally Loaded Support Structure2 P! Y! q* j2 s1 @5 C; d' z
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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 |
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Test Case9 U+ y( s2 J+ A& \# b
! n5 t3 G3 D1 LFind 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. 6 P9 k3 X6 H+ E8 k
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Figure 3.1 Support Structure Problem Sketch( j: ~3 ]+ T, i, i, i0 p, n
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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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7 q$ d( G6 G$ J9 ]- }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.
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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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3 g( q: A1 d6 {+ C8 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