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RISDynamics of Inertia-Variant Flexible Systems Using Experimentally Identified Parameters
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this investigation modal parameters (frequency, damping, and mode shapes) which are determined experimentally using parameter estimation techniques are employed to simulate and predict the dynamic ...
Automated Analysis of Constrained Systems of Rigid and Flexible Bodies
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper is concerned with modeling inertia properties of flexible components that undergo large angular rotations. Consistent, lumped and hybrid mass techniques are presented in detail and ...
Dynamics of Flexible Bodies Using Generalized Newton-Euler Equations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A force acting on a rigid body produces a linear acceleration for the whole body together with an angular acceleration about its center of mass. This result is in fact Newton-Euler equations ...
General Method for Modeling Slope Discontinuities and T-Sections Using ANCF Gradient Deficient Finite Elements
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Slope discontinuities and T-sections can be modeled in a straight forward manner using fully parameterized absolute nodal coordinate formulation (ANCF) finite elements that have a complete set ...
Nadal’s Formula and High Speed Rail Derailments
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Several railroad vehicle derailment criteria are based on the (L/LVV) ratio where L is the lateral force and V is the vertical force acting on the wheelset. Derailment is assumed to occur ...
Uniqueness of the Geometric Representation in Large Rotation Finite Element Formulations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Several finite element formulations used in the analysis of large rotation and large deformation problems employ independent interpolations for the displacement and rotation fields. As explained ...
Finite Element Incremental Approach and Exact Rigid Body Inertia
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the dynamics of multibody systems that consist of interconnected rigid and deformable bodies, it is desirable to have a formulation that preserves the exactness of the rigid body inertia. ...
Variable Degree-of-Freedom Component Mode Analysis of Inertia Variant Flexible Mechanical Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A method is presented for transient dynamic analysis of mechanical systems composed of interconnected rigid and flexible bodies that undergo large angular displacements. Gross displacement of ...
Directions of the Tangential Creep Forces in Railroad Vehicle Dynamics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In some of the wheel/rail creep theories used in railroad vehicle simulations, the direction of the tangential creep forces is assumed to be the wheel rolling direction (RD). When the Hertz ...
Rational Finite Elements and Flexible Body Dynamics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The goal of this study is to develop the dynamic differential equations of the first finite element based on the rational absolute nodal coordinate formulation (RANCF) and to demonstrate its ...