TY - JOUR ID - 71774 TI - Numerical Modeling of Railway Track Supporting System using Finite-Infinite and Thin Layer Elements JO - International Journal of Engineering JA - IJE LA - en SN - 1025-2495 AU - Moradi pour, Parviz AU - Yeat, W.F AU - Thanoon, W.A.M AU - Noorzaie, J. AU - Jaafar, M.S. AD - Department of Civil Engineering, Universiti Putra Malaysia AD - Civil Engineering, University Putra Malaysia AD - Civil Engineering, university putra Malaysia AD - Department of Civil Engineering, university putra Malaysia Y1 - 2009 PY - 2009 VL - 22 IS - 2 SP - 131 EP - 144 KW - Thin Layer Element KW - Finite Element KW - Infinite Element KW - Railway Track Supporting Media DO - N2 - The present contribution deals with the numerical modeling of railway track-supporting systems-using coupled finite-infinite elements-to represent the near and distant field stress distribution, and also employing a thin layer interface element to account for the interfacial behavior between sleepers and ballast. To simulate the relative debonding, slipping and crushing at the contact area between sleepers and ballast, a modified Mohr-Coulomb criterion was adopted. Further more an attempt was made to consider the elasto plastic materials’ non-linearity of the railway track supporting media by employing different constitutive models to represent steel, concrete and other supporting materials. It is seen that during an incremental-iterative mode of load application, the yielding initially started from the edge of the sleepers and then flowed vertically downwards and spread towards the center of the railway supporting system. UR - https://www.ije.ir/article_71774.html L1 - https://www.ije.ir/article_71774_185c107c13972ddadd956ca99aea4c36.pdf ER -