J. Appl. Mech.: All Topics http://scitation.aip.org/ J. Appl. Mech.: All Topics On Singularity of Rigid-Body Dynamics Using Quaternion-Based Models http://link.aip.org/link/doi/10.1115/1.4005575 Homin Choi and Bingen Yang<br/> It is well known that use of quaternions in dynamic modeling of rigid bodies can avoid the singularity due to Euler rotations. This paper shows that the dynamic response of a rigid body modeled by quaternions may become unbounded when a torque is applied to the body. A theorem is derived, relating t ... [J. Appl. Mech. 79, 024502 (2012)] published Thu Feb 9, 2012. Influence of Melting Heat Transfer in the Stagnation-Point Flow of a Jeffrey Fluid in the Presence of Viscous Dissipation http://link.aip.org/link/doi/10.1115/1.4005560 M. Mustafa, T. Hayat, and Awatif A. Hendi<br/> This communication studies the effect of melting heat transfer on the stagnation-point flow of a Jeffrey fluid over a stretching sheet. Heat transfer analysis is carried out in the presence of viscous dissipation. The arising differential system has been solved by the homotopy analysis method (HAM). ... [J. Appl. Mech. 79, 024501 (2012)] published Thu Feb 9, 2012. Capillary Electrodynamic Stability of Self-Gravitational Fluid Cylinder With Varying Electric Field http://link.aip.org/link/doi/10.1115/1.4005576 Alfaisal A. Hasan<br/> The instability of a self-gravitating fluid cylinder surrounded by a self-gravitating tenuous medium pervaded by transverse varying electric field is discussed under the combined effect of the capillary, self-gravitating, and electric forces. This has been done for all axisymmetric and nonaxisymmetr ... [J. Appl. Mech. 79, 021006 (2012)] published Thu Feb 9, 2012. Perturbation Finite Element Transfer Matrix Method for Random Eigenvalue Problems of Uncertain Structures http://link.aip.org/link/doi/10.1115/1.4005574 Bao Rong, Xiaoting Rui, and Ling Tao<br/> The rapid computation of random eigenvalue problems of uncertain structures is the key point in structural dynamics, and it is prerequisite to the efficient dynamic analysis and optimal design of structures. In this paper, by combining finite element-transfer matrix method (FE-TMM) with perturbation ... [J. Appl. Mech. 79, 021005 (2012)] published Thu Feb 9, 2012. Experimental and Finite Element Modal Analysis of a Pliant Elastic Membrane for Micro Air Vehicles Applications http://link.aip.org/link/doi/10.1115/1.4005569 Uttam Kumar Chakravarty and Roberto Albertani<br/> This paper investigates the modal characteristics of a latex membrane for micro air vehicles applications. Finite element (FE) models are developed for characterizing the latex membrane at dynamic loading and validated by experimental results. The membrane at different pre-tension levels is attached ... [J. Appl. Mech. 79, 021004 (2012)] published Thu Feb 9, 2012. Effect of Contact Conditions on Void Coalescence at Low Stress Triaxiality Shearing http://link.aip.org/link/doi/10.1115/1.4005565 Jonas Dahl, Kim L. Nielsen, and Viggo Tvergaard<br/> Recent numerical cell-model studies have revealed the ductile failure mechanism in shear to be governed by the interaction between neighboring voids, which collapse to micro-cracks and continuously rotate and elongate until coalescence occurs. Modeling this failure mechanism is by no means trivial a ... [J. Appl. Mech. 79, 021003 (2012)] published Thu Feb 9, 2012. A Micromechanically Based Anisotropic Constitutive Model for the Microtubule Wall http://link.aip.org/link/doi/10.1115/1.4005548 Melis Arslan and Mary C. Boyce<br/> Microtubules serve as one of the structural components of the cell and govern several important cellular functions including mitosis and vesicular transport. Microtubules are comprised of tubulin subunits formed by alpha and beta tubulin dimers arranged in a cylindrical hollow tube with diameter ~20 ... [J. Appl. Mech. 79, 021002 (2012)] published Thu Feb 9, 2012. Bio-Morphing of Progressive Pathologies in Haversian Cortical Bone http://link.aip.org/link/doi/10.1115/1.4005533 E. Budyn, J. Jonvaux, and T. Hoc<br/> We present an evolutionary microstructural model to study the mechanical behavior of pathological Haversian cortical bone in the framework of linear elasticity. The Haversian cortical bone includes Haversian canals, osteons, cement lines, and interstitial bone. The composite microstructure is built ... [J. Appl. Mech. 79, 021001 (2012)] published Thu Feb 9, 2012.