[특허]Numerical structure-analysis calculation system

Keio University

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특허 상세정보

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Numerical structure-analysis calculation system

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06F-017/50 G06F-007/60 G06F-017/10 G06G-007/48
미국특허분류(USC)	703/001; 703/002; 703/006; 703/007
출원번호	US-0528792 (2008-02-04)
등록번호	US-8352219 (2013-01-08)
우선권정보	JP-2007-049275 (2007-02-28)
국제출원번호	PCT/JP2008/051729 (2008-02-04)
§371/§102 date	20090826 (20090826)
국제공개번호	WO2008/105221 (2008-09-04)
발명자 / 주소	Takahashi, Kunihiro Sakurai, Toshiaki Nakada, Tatsuya Inoue, Kengo
출원인 / 주소	Keio University
대리인 / 주소	patenttm.us
인용정보	피인용 횟수 : 0 인용 특허 : 9

초록
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The object is to enable the calculation of load transfer paths in case of distributed load applied to the structure with the numerical structure-analysis calculation system. The value of the parameter U** at each point is calculated according to the ratio of the complementary strain energy U at the application of load without fixing the point in the structure and the complementary strain energy U′ at the application of load with fixing one point in the structure. In the actual calculation, according to the complementary strain energy U, and the flexibility matrix CAC with respect to the loading point A and one point C in the structure, and the inverse matrix CCC−1 of the flexibility matrix with respect to point C, and the load pA at the loading point A, the value of the parameter U** (CACCCC−1CCApA·pA/(2U)) at point C is calculated. Or, from the complementary strain energy U, and the inverse matrix CCC−1, and the displacement dC at point C, the value of the parameter U**(dC·CCC−1dC/(2U)) at point C is calculated.

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1. A numerical structure-analysis calculation system to perform structural analysis in one or more processors of objective structure for analysis based on the load-transfer-path method furnished with an FEM calculation means to calculate deformation of objective structure for analysis comprising; a first calculation means to calculate in the one or more processors the complementary strain energy U under the condition that a loading point is loaded without fixing any points in the structure except for a fixed point B,a second calculation means to calculate in the one or more processors the complementary strain energy U′ under the condition that the loading point is loaded with fixing the one fixed point B and an arbitrary point C in the structure, anda third calculation means to calculate in the one or more processors the value U**=(1−(U′/U)) according to said each complementary strain energy value at each point. 2. A numerical structure-analysis calculation system to perform structural analysis in one or more processors of objective structure for analysis based on the load-transfer-path method with an FEM calculation means to calculate deformation of objective structure for analysis comprising; a first calculation means to calculate in the one or more processors the complementary strain energy U under the condition that a loading point A is loaded with load pA without fixing any points in the structure except for the fixed spot B,a second calculation means to calculate in the one or more processors the flexibility matrix CAC in accordance with both of the loading point A and one point C in the structure,a third calculation means to calculate in the one or more processors the inverse matrix CCC−1 of the flexibility matrix CCC in accordance with one point C in the structure, anda fourth calculation means to calculate in the one or more processors the value of the parameter U**=(pA·CACCCC−1CCApA/(2U)) at each point C from the values of CAC, and CCC−1, and pA, and U. 3. The numerical structure-analysis calculation system described in claim 2, wherein a fifth calculation means to calculate the flexibility matrices CAC and CCC according to the inspection loadings in three directions applied to the point C is furnished. 4. A numerical structure-analysis calculation system to perform structural analysis in one or more processors of objective structure for analysis based on the load-transfer-path method with an FEM calculation means to calculate deformation of objective structure for analysis comprising; a first calculation means to calculate in the one or more processors the complementary strain energy U under the condition that a loading point is loaded with load pA without fixing any points in the structure,a memory means to hold the value of the displacement of each point under the condition that the loading point is loaded with pA without fixing any points in the structure except for the fixed spot B,a second calculation means to calculate in the one or more processors the inverse matrix CCC−1 of the flexibility matrix CCC in accordance with one point C in the structure, anda third calculation means to calculate in the one or more processors the value of the parameter U**=(dC·CCC−1dC/(2U)) at each point C from the values of the displacement dC at point C, and the inverse matrix CCC−1, and U. 5. A numerical structure-analysis calculation system to perform structural analysis in one or more processors of objective structure for analysis based on the load-transfer-path method with an FEM calculation means to calculate deformation of objective structure for analysis comprising; a first calculation means to calculate in the one or more processors the complementary strain energy U under the condition that the distributed load is applied without fixing any points in the structure except for the fixed spot B,a memory means to hold the value of the displacement of each point under the condition that the distributed load is applied without fixing any points in the structure,a second calculation means to calculate in the one or more processors the inverse matrix CCC−1 of the flexibility matrix CCC in accordance with one point C in the structure, anda third calculation means to calculate in the one or more processors the value of the parameter U**=(dC·CCC−1dC/(2U)) at each point C from the values of the displacement dC at the point C, and the inverse matrix CCC−1, and U. 6. A numerical structure-analysis calculation method to perform structural analysis in one or more processors of objective structure for analysis based on the load-transfer-path method with FEM to calculate deformation of objective structure for analysis, characterized by calculating in the one or more processors the complementary strain energy U under the condition that the loading point is loaded without fixing any points in the structure, calculating in the one or more processors the complementary strain energy U′ under the condition that the loading point is loaded with fixing one point in the structure, and calculating in the one or more processors the value U**=(1−(U′/U)) according to said each complementary strain energy values at each point. 7. A numerical structure-analysis calculation method to perform structural analysis in one or more processors of objective structure for analysis based on the load-transfer-path method with FEM to calculate deformation of objective structure for analysis, characterized by calculating in the one or more processors the complementary strain energy U under the condition that the loading point A is loaded with load pA without fixing any points in the structure except for the fixed spot B, calculating in the one or more processors the flexibility matrix CAC in accordance with both of the loading point A and one point C in the structure, calculating in the one or more processors the inverse matrix CCC−1 of the flexibility matrix CCC in accordance with one point C in the structure, and calculating in the one or more processors the value of the parameter U**=(pA·CACCCC−1CCApA/(2U)) at each point C from the values of CAC, CCC−1, pA and U. 8. The numerical structure-analysis calculation method described in claim 7, characterized by calculating the flexibility matrices CAC and CCC according to the inspection loadings in three directions applied to the point C. 9. A numerical structure-analysis calculation method to perform structural analysis in one or more processors of objective structure for analysis based on the load-transfer-path method with FEM to calculate deformation of objective structure for analysis, characterized by calculating in the one or more processors the complementary strain energy U under the condition that the loading point is loaded with load pA without fixing any points in the structure except for the fixed spot B, holding the value of the displacement of each point under the condition that the loading point is loaded with pA without fixing any points in the structure, calculating in the one or more processors the inverse matrix CCC−1 of the flexibility matrix CCC in accordance with one point C in the structure, calculating in the one or more processors the value of the parameter U**=(dC·CCC−1dC/(2U)) at each point C from the values of the displacement dC at point C, the inverse matrix CCC−1 and U. 10. A numerical structure-analysis calculation method to perform structural analysis in one or more processors of objective structure for analysis based on the load-transfer-path method with FEM to calculate deformation of objective structure for analysis, characterized by calculating in the one or more processors the complementary strain energy U under the condition that the distributed load is applied without fixing any points in the structure except for the fixed spot B, holding the value of the displacement of each point under the condition that the distributed load is applied without fixing any points in the structure, calculating in the one or more processors the inverse matrix CCC−1 of the flexibility matrix CCC in accordance with one point C in the structure, and calculating in the one or more processors the value of the parameter U**=(dC·CCC−1dC/(2U)) at each point C from the values of the displacement dC at point C, the inverse matrix CCC−1 and U. 11. A computer program product comprising a non-transitory recording media wherein are described the processing sequences to perform the numerical structure-analysis calculation method described in claim 10 with a computer. 12. A computer program product comprising a non-transitory recording media wherein are described the processing sequences to perform the numerical structure-analysis calculation method described in claim 6 with a computer. 13. A computer program product comprising a non-transitory recording media wherein are described the processing sequences to perform the numerical structure-analysis calculation method described in claim 7 with a computer. 14. A computer program product comprising a non-transitory recording media wherein are described the processing sequences to perform the numerical structure-analysis calculation method described in claim 8 with a computer. 15. A computer program product comprising a non-transitory recording media wherein are described the processing sequences to perform the numerical structure-analysis calculation method described in claim 9 with a computer.

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Numerical structure-analysis calculation system

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Numerical structure-analysis calculation system

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