http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Hakim Naceur (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Hakim Naceur,Jun Lin,Daniel Coutellier,Abdel Laksimi 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.5
In the present investigation, a new modified smoothed particle hydrodynamics (SPH) method particularly adapted for the analysis ofplanar structures undergoing geometric nonlinearities is introduced and discussed. The problem of inconsistency which is often encounteredin the classical SPH method is alleviated by introducing modifications of the kernel function and its derivatives using an explicitpolynomial feature representation based on the Taylor series expansion. Tensile instabilities arising in the Eulerian-based SPH formulationwhich appear due to large deformations are attenuated by the introduction of a total Lagrangian formulation which is robust for largedisplacements/rotations. The resulting nonlinear problem is solved using the explicit dynamics time integration scheme. The validity ofthe proposed approach is demonstrated through two numerical applications involving geometrical nonlinearities, where the obtainedresults are compared to those obtained using the standard finite element method.
-
Analysis of thin composite structures using an efficient hex-shell finite element
Seddik Shiri,Hakim Naceur 대한기계학회 2013 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.27 No.12
In this paper a general methodology for the modeling of material composite multilayered shell structures is proposed using a Hex-shell finite element modeling. The first part of the paper is devoted to the general FE formulation of the present composite 8-node Hex-shell element called SCH8, based only on displacement degrees of freedom. A particular attention is given to alleviate shear, trapezoidal and thickness locking, without resorting to the classical plane-stress assumption. The anisotropic material behavior of layered shells is modeled using a fully three dimensional elastic orthotropic material law in each layer, including the thickness stress component. Applications to laminate thick shell structures are studied to validate the methodology, and good results have been obtained in comparison with ABAQUS© commercial code.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
