Response Analysis Based on Smallest Interval Set of Parameters for Structures With Uncertainty
-
摘要: 考虑到实际工程问题中普遍存在不确定性,完成了针对工程结构从定量化到传播的完整不确定性分析过程.通过建立包含全部有限样本点的最小区间/超立方体域来描述不确定参数的变化范围;借助于最小区间参数集,开展了不确定结构传播分析的研究工作以确定其最有利/不利响应.此外,进一步就给出的区间分析方法同经典概率方法的相容性进行了分析和探究.采用2个数值算例很好地论证了所述方法的正确性和可行性.
-
关键词:
- 定量化分析 /
- 最小区间集/超立方体 /
- 不确定结构响应 /
- 最有利响应 /
- 最不利响应
Abstract: An integral analytic process from quantification to propagation based on limited uncertain parameters was investigated for dealing with practical engineering problems. A new method using the smallest intervalset/hyperrectangle containing all the experimental data was proposed to quantify the uncertainties of parameters. By virtue of the smallest parameter interval-set, the study of uncertainty propagation evaluating the most favorable response and the least favorable response of structures based on interval analysis was then presented. Furthermore, the relationship between the proposed interval analysis method and the classical interval analysis method was discussed. Two numerical examples were performed to demonstrate the feasibility and validity of the developed method. -
[1] Jiang C, Han X, Lu G Y, Liu J, Zhang Z, Bai Y C. Correlation analysis of non-probabilistic convex model and corresponding structural reliability technique[J]. Computer Methods in Applied Mechanics and Engineering, 2011, 200(33/36): 2528-2546. [2] Elishakoff I, Ohsaki M. Optimization and Anti-Optimization of Structures Under Uncertainty[M]. London: Imperial College Press, 2010. [3] Impollonia N, Muscolino G. Interval analysis of structures with uncertain-but-bounded axial stiffness[J]. Computer Methods in Applied Mechanics and Engineering, 2011, 200(21/22): 1945-1962. [4] Degrauwe D, Roeck G D, Lombaert G. Uncertainty quantification in the damage assessment of a cable-stayed bridge by means of fuzzy numbers[J]. Computers & Structures, 2009, 87(17/18): 1077-1084. [5] Zhai D Y, Mendel J M. Uncertainty measures for general type-2 fuzzy sets[J]. Information Science, 2011, 181(3): 503-518. [6] Kang Z, Luo Y J. Non-Probabilistic reliability-based topology optimization of geometrically nonlinear structures using convex models[J]. Computer Methods in Applied Mechanics and Engineering, 2009, 198(41/44): 3228-3238. [7] Qiu Z P, Ma L H, Wang X J. Non-probabilistic interval analysis method for dynamic response analysis of nonlinear systems with uncertainty[J]. Journal of Sound and Vibration, 2009, 319(1/2): 531-540. [8] Chen S H, Ma L, Meng G W, Guo R. An efficient method for evaluating the natural frequencies of structures with uncertain-but-bounded parameters[J]. Computers & Structures, 2009, 87(9/10): 582-590. [9] Luo Y J, Kang Z, Li A. Structural reliability assessment based on probability and convex set mixed mode[J]. Computers & Structures, 2009, 87(21/22): 1408-1415. [10] Guo S X. Stability analysis and design of time-delay uncertain systems using robust reliability method[J]. Journal of Systems Engineering and Electronics, 2011, 22(3): 493-499. [11] Luo Y J, Kang Z, Luo Z, Li A. Continuum topology optimization with non-probabilistic reliability constraints based on multi-ellipsoid convex model[J]. Structural and Multidisciplinary Optimization, 2009, 39(3): 297-310. [12] Ferson S, Kreinovich V, Hajagos J, Oberkampf W, Ginzburg L. Experimental uncertainty estimation and statistics for data having interval uncertainty [13] [R]. SAND2007-0939, 2007. [14] Aggarwal C C. Managing and Mining Uncertain Data[M]. New York: Springer, 2009. [15] Coleman H W, Steele W G. Experimentation, Validation, and Uncertainty Analysis for Engineers[M]. New Jersey: Wiley, 2009. [16] Qiu Z P. Comparison of static response of structures using convex models and interval analysis method[J]. International Journal for Numerical Methods in Engineering, 2003, 56(12): 1735-1753. [17] zben T. Analysis of critical buckling load of laminated composites plate with different boundary conditions using fem and analytical methods[J]. Computational Materials Science, 2009, 45(4): 1006-1015. [18] Goggin P R. The elastic constants of carbon-fibre composites[J]. Journal of Materials Science, 1973, 8(2): 233-244.
点击查看大图
计量
- 文章访问数: 1380
- HTML全文浏览量: 88
- PDF下载量: 835
- 被引次数: 0