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2 m2 C) t6 R L ^# w! g H$ i提示：如果力控制法不能收敛，试用弧长法。
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Title Snap-Through Buckling of a Hinged Shell5 z4 O; i9 |# t% C
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| Reference: | C. C. Chang, “Periodically Restarted Quasi-Newton Updates in Constant Arc-Length Method”, Computers and Structures, Vol. 41 No. 5, 1991, pp. 963-972. | | Analysis Type(s): | Static Analysis |
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Test Case
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8 A+ K* T' p/ P3 [A hinged cylindrical shell is subjected to a vertical point load (P) at its center. Find the vertical displacement (UY) at points A and B for the load of 1000 N.& `4 r1 I5 ?& p. v' {
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Figure 17.1 Hinged Shell Problem Sketch
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| Material Properties | | E = 3.10275 kN/mm2 | | υ = 0.3 |
| | Geometric Properties | | R = 2540 m | | l= 254 m | | h = 6.35 m | | Θ = 0.1 rad |
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Analysis Assumptions and Modeling NotesDue to symmetry, only a quarter of the structure is analyzed. The structure exhibits the nonlinear postbuckling behavior under the applied load. Therefore, a large deflection analysis is performed using the arc length solution technique. The results are observed in POST26.( T9 o! A6 M3 J
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Results Comparison | Target [1] | ANSYS | Ratio | | UY @ A, mm | -30.0 | -31.7 | 1.056 | | UY @ B, mm | -26.0 | -25.8 | 0.994 |
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- Target results are from graphical solution
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Figure 17.2 Deflection and Total Load Plot
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[ 本帖最后由 tigerdak 于 2007-11-8 01:08 编辑 ] |
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发表于 2007-11-8 01:07:04