In this thesis , an incremental - iterative solution procedure using the modified newton - raphson iteration is used to solve geometrically nonlinear problems 在涉及幾何非線性問題的數(shù)值方法中,通常都采用增量和迭代分析的方法。
Based on this division , with the method of iteration , the influencing factors and formulas for convergence speed are deduced and discussed 在此基礎(chǔ)上,對于主動變形引起的被動變形,采用迭代分析的方法,得出了收斂速度的影響因素及其表達式,并進行了相關(guān)討論。
The solution of the original nonlinear problem is reasonably approximated by means of a series of random vibration analyses for the linearized structure using the pseudo excitation method 本文方法充分利用了虛擬激勵法求解復(fù)雜線性結(jié)構(gòu)高效、精確的優(yōu)點,以一系列線性問題的迭代分析,迅速地求得原非線性問題合理的近似解。
Subsequently , the thesis improves the simplified method , and puts forward an iterative algorithm to consider the influence by raft rigidity to substratum settlement and stab deformation . then , numeric examples are calculated to testify its validity . finally , the application of the method is introduced on a factual project and differences between the simplified method and the improved method are discussed 在此基礎(chǔ)上,本文改進了簡化共同作用分析方法,提出了考慮筏板剛度對下臥層沉降的影響和樁端刺入變形,滿足樁?土?筏位移協(xié)調(diào)的共同作用迭代分析算法,并通過數(shù)值算例驗證了該算法的有效性。