Results 31 to 40 of about 21,887 (231)

A Multi-Leveled Coordinate for Multibody Mechanics

MATEC Web of Conferences, 2016
For a proper way of modelling and simulation, as well as the precise and completeness, and a new multi-level method named homogeneous tensor coordinate(HTC) was developed by improving the absolute nodal coordinate formulation(ANCF) and the homogeneous ...
Shen Fan, Rong Siyuan, Liu Jiafu, Cui Naigang   +3 more
doaj   +1 more source

Model of Assembly Deviation of Irregular Large Thin-Walled Structures Based on Higher-Order Composite Shell Element

Shanghai Jiaotong Daxue xuebao, 2022
The non-uniform stiffness distribution of irregular large thin-walled structures leads to warping deformation in the process of machining and assembly.
LIN Zhangpeng, YU Haidong, YUAN Ke
doaj   +1 more source

RESEARCH ON MECHANICAL CHARACTERISTICS OF TWO-DIMENSIONAL ABSOLUTE NODAL COORDINATE SHEAR BEAM ELEMENT BASED ON MODAL ANALYSIS (MT)

Jixie qiangdu, 2022
With the help of theoretical analysis and numerical simulation, the modal parameters of the two-dimensionally low-order beam elements and high-order beam elements based on the absolute nodal coordinate formulation were studied. The analytical solution of
ZHOU Chuan, ZHAO ChunHua, DU YaPing, GUO JiaHui, ZHANG LiQiang   +4 more
doaj  

The Study and Application of Quadrilateral Space-Time Absolute Nodal Coordinate Formulation Cable Element

Machines
The construction of a high-order shape function is a key and difficulty for unstructured grid mesh and sliding boundary problems. In this paper, a construction method of space-time absolute nodal coordinate formulation quadrilateral cable (SACQ) is ...
Dekun Chen, Jia Feng, Naidan Hou, Zhou Huang   +3 more
doaj   +1 more source

A Finite Element Computation of the Gravitational Radiation emitted by a Point-like object orbiting a Non-rotating Black Hole

, 2005
The description of extreme-mass-ratio binary systems in the inspiral phase is a challenging problem in gravitational wave physics with significant relevance for the space interferometer LISA.
A. Bayliss, Carlos F. Sopuerta, E. Poisson, G. Strang, H. M. Hilber, I. Babuška, J. Chung, J. Stoer, K. Kokkotas, N. N. Newmark, O. C. Zienkiewicz, P. G. Ciarlet, Pablo Laguna, S. Chandrasekhar, S. Chandrasekhar, S. Vitale, T. Prince, T. J. R. Hughes, W. H. Press   +18 more
core   +1 more source

Hard‐Magnetic Soft Millirobots in Underactuated Systems

Advanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang, Zixuan Zhang, Bingyan Li, Junkai Wang, Hongcheng Gu   +4 more
wiley   +1 more source

Adaptive mesh refinements for thin shells whose middle surface is not exactly known [PDF]

, 2008
A strategy concerning mesh refinements for thin shells computation is presented. The geometry of the shell is given only by the reduced information consisting in nodes and normals on its middle surface corresponding to a coarse mesh.
Destuynder, Philippe, Moguen, Yann, Salaün, Michel   +2 more
core   +4 more sources

Continuum Mechanics Modeling of Flexible Spring Joints in Surgical Robots

Advanced Robotics Research, EarlyView.
A new mechanical model of a tendon‐actuated helical extension spring joint in surgical robots is built using Cosserat rod theory. The model can implicitly handle the unknown contacts between adjacent coils and numerically predict spring shapes from straight to significantly bent under actuation forces.
Botian Sun, Liang Zhang, Jianwen Zeng, Xuefeng Wang   +3 more
wiley   +1 more source

Numerical Modeling and Analysis of Pendant Installation Method Dynamics Using Absolute Nodal Coordinate Formulation

Applied Sciences
Accurately simulating the deployment process of coupled systems in deep-sea environments remains a significant challenge. This study employs the Absolute Nodal Coordinate Formulation (ANCF) to dynamically model and analyze multi-body systems based on the
Yongkang Chen, Shiping He, Xinhao Luo
doaj   +1 more source

Influence of molecular symmetry on strong-field ionization: Studies on ethylene, benzene, fluorobenzene, and chlorofluorobenzene

, 2004
Using the molecular strong-field approximation we consider the effects of molecular symmetry on the ionization of molecules by a strong, linearly polarized laser pulse.
A. M. Perelomov, A. M. Perelomov, B. M. Smirnov, B. M. Smirnov, Christer Z. Bisgaard, D. M. Brink, Henrik Stapelfeldt, L. V. Keldysh, L. V. Keldysh, Lars Bojer Madsen, M. V. Ammosov, M. V. Ammosov, R. N. Zare, T. Helgaker, Thomas K. Kjeldsen   +14 more
core   +1 more source