CosmosWorks算法验证文件 6 (Thermal Stress Analysis)

tigerdak

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提示：带温度载荷的静态结构分析。

8 O# }9 p% K5 k. c1 q6 g' yTitle      Thermally Loaded Support Structure

  U. B3 i6 w  n+ S* O5 mOverview
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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

7 N2 W. d5 w# Y" ]# WTest Case

$ y& g! C& X7 N; c8 A* 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.
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1 m  T3 f) S1 W( s3 ^- c$ y9 oFigure 3.1  Support Structure Problem Sketch

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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

1 @* s7 g, z6 D( R7 N* I8 A9 XAnalysis 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.

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

[ 本帖最后由 tigerdak 于 2007-11-9 15:28 编辑 ]