02452nas a2200265 a 450000500170000000800410001703500150005810000160007324500840008926000670017330000430024049000270028350001330031050200590044352012710050265000270177365000200180070000370182070000470185770000530190470000420195771000550199981000590205485600730211320260818090705.0260202s20259999th u  ms t    000   eng d  a.b124740711 aWeijie, Lim10aDevelopment of a novel finite rigid body element with embodied continuum theory  aPathum Thani, Thailand :bAsian Institute of Technology,c2025  a128 leaves :bill.+e1 online resource1 aThesis ;vno. ST-25-10  aA thesis submitted in partial fulfillment of the requirements for the  degree of Master of Engineering in Structural Engineering  aThesis (M. Eng.) - Asian Institute of Technology, 2025  aThis study presents a novel finite rigid body formulation derived from continuum  mechanics principles, enabling accurate lateral deformation prediction without iterative calculations. By adapting finite element method (FEM) continuum derivations, the  proposed approach achieves explicit modeling of Poisson-induced deformations in rigid body systems{u2014}a longstanding challenge in computational mechanics. The  framework is validated through numerical biaxial and uniaxial compression tests on  concrete specimens, demonstrating exact agreement with theoretical elastic-stage  predictions (e.g., lateral strain matching p*f{u2093} for p = 0.2).Key innovations include: (1) a non-iterative deformation mapping technique that  preserves volume constraints, and (2) a mechanical-based stiffness formulation  bridging rigid body dynamics and continuum response. Results show {u2264}5% error in  Von Mises stress capture compared to analytical solutions, outperforming conventional  rigid body methods that require ad-hoc Poisson coupling. This work advances  multiscale modeling by enabling efficient rigid-body-scale simulations with inherent continuum deformation properties, particularly beneficial for quasi-brittle materials like concrete under service loads.  0aMechanics of materials 0aDynamics, Rigid1 aKrishna, Chaitanya,eChairperson0 aPennung Warnitchai,eExamination Committee0 aRaktipong Sahamitmongkol,eExamination Committee1 aAnwar, Naveed,eExamination Committee2 aBRIDGEX BINA SDN BHD, Malaysia,eScholarship Donor2 aAsian Institute of Technology.tThesis ;vno. ST-25-10403Full-Textuhttp://203.159.5.9/ait-thesis/Viewer/viewer.php?id=B23413