| 摘要 |
PROBLEM TO BE SOLVED: To shorten analysis time by preventing a solution from diverging. SOLUTION: When analysis is performed by using an equivalent linear analysis method, distortion dependence curves of physical property values are previously found and initial physical property values are defined in S1 (step 1). Rigidity is evaluated in S2, and frequency response calculation is performed in succeeding S3. This response calculation is executed according to the same procedure as the complex response analysis method well-known as a method applied to linear problems. When the result of the response calculation is acquired, effective distortions eγare calculated in S4. It is determined whether physical property values (shear rigidity value and attenuation constant value) used in the calculation in S5 conform to physical property values (shear rigidity value and attenuation constant value) calculated in S4. When conformity is found, analysis flow is terminated. Meanwhile, conformity is determined to be absent, transition to S6 takes place and physical property values agreeing with the distortions calculated according to the dependence curve are newly defined to return to S2. By repeating such procedure a plurality of times, convergence takes place to provide a solution. In this embodiment, an equivalent linear analysis method like this is applied to a building construction. COPYRIGHT: (C)2004,JPO |
