【摘要】 已知弹性结构线性振动系统的具有不同置信度的分层次固有频率和振型,以及用合理的离散化方法得到了系统的刚度矩阵K和质量矩阵M,并假设了M、K中之一较可靠,本文给出在这些条件下,考虑到不同层次的置信度的近似建模方法,对建模方法以及所得结果的唯一性也给出了严格的数学证明;最后的数字例子不仅证实了这一方法的可行性,并且表明这一方法优于所列文献[4]给出的方法。更多还原

【Abstract】 In this paper, an elastic structure model was constructed acceding to the test date with different confidence and properly selected analytical para-meter (mass matrix or rstiffness matrix K). Modeling method and the uniqueness of the results was strictly proved, finally, a numerical example proved the reasonableness of this method and the results was batter that that of reference [4] .更多还原