The tendency of the simulated curves of pull out forces vs . displacements agrees well with experimental results , indicating the use and power of the present approach 模擬出的抽拔力隨位移的變化曲線,能明確顯示出界面脫粘的開始、結(jié)束,以及完全脫粘后克服摩擦力的滑移過程,驗(yàn)證了其應(yīng)用的合理性。
The results of numerical simulations and analytical solution show good accordance , except in the region near the fiber ends , where the shear - lag approach causes considerable discrepancy . next , to overcome the unrealistic assumption of perfect bonding , augmented - lagrange contact algorithm , element " birth - death " and fem are combined in the study of the partial debonding between fiber and matrix under pull out forces 然而完全粘結(jié)的假設(shè)過于理想,與實(shí)際應(yīng)用相差較大,因此,本論文將有限元法,接觸算法和單元生死法結(jié)合起來,研究較大抽拔力作用下,纖維與基體之間發(fā)生的逐步脫粘的過程,所得到的抽拔力的變化結(jié)果,與試驗(yàn)數(shù)據(jù)比較,較為一致。