a dynamic finite element
SAP2000 - Three Dimensional Static and Dynamic Finite Element Analysis and Design of Structures
... solver • Automated fast profile optimization • SAP2000 • Non-linear Pushover Analysis General Dynamic Analysis Analysis Options Eigenvalue analysis with an accelerated subspace iteration algorithm ... t ) Analysis Options Extensive Analysis Capabilities Static and/or dynamic response spectrum analysis • P-delta analysis with either static or dynamic analysis • Blocked active column equation ... behavior • Axial-load/ biaxialmoment interaction • Multilinear behavior including softening • Tabulated and Graphical display of hinge status Shell Elements Powerful Shell Elements General quadrilateral...
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Development of a realistic finite element model of human head and its applications to head injuries
... membranes they are dura ma s, e ater, a barachnoida space as well as the pia mater The dura mater al m arachnoidea mater, sub is a tough fibrous a h, and dense membrane, while the arachnoid mater ... facial bones and cranial bones as well as intracranial injuries are evaluated based on the tolerance limits of the biomechanical parameters General trend of maximum intracranial biomechanical parameters ... enoid bones as well as paired pari s s ietal and tempor bones, w ral while the fa acial bones are made up of the u unpaired vo omer and mandi ible as well as paire lacrimal, nasal, pa ed alatine,...
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Supporting Finite Element Analysis with a Relational Database Backend docx
... specifically calls for a particular field mapped onto a particular geometry, the data for that mapping may not even explicitly reside in a database table That is, many physical or mechanical measures ... certainly matured, but it is the scale and complexity of the data coming from the applications that renders ad hoc data management and data visualization increasingly impractical More systematic ... visualization tools and database systems can work very well to support both the actual FEA simulation workflow and data management and for the post-production data analysis tasks The tools have...
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a first corse in finite element analysis
... finite element meshes from CAD databases; they can also generate finite element meshes from digitizations of surface data The need for two databases causes substantial headaches and is one of the major ... flow analysis of coolant ponds, pollutants and contaminants, and air in ventilation systems; e electromagnetic analysis of antennas, transistors and aircraft signatures; f analysis of surgical ... in the airframe Almost all of these are linear analyses; only determining the ultimate load capacity of an airframe requires a nonlinear analysis It is interesting that in the 1980s a famous professor...
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a first course in the finite element method
... analysis available, such as static and dynamic Material behavior, such as linear-elastic and nonlinear Load types, such as concentrated, distributed, thermal, and displacement (settlement) Data ... in x and y directions, respectively natural coordinates attached to isoparametric element surface area thickness of a plane element or a plate element nodal temperatures of a triangular element ... rotation or slope in a beam element functional for heat-transfer problem total potential energy mass density of a material weight density of a material angular velocity and natural circular frequency...
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the finite element method a practical course
... solids Matrices for linear triangular elements, bilinear rectangular and quadrilateral elements are derived in detail Area and natural coordinates are also introduced in the process Iso-parametric ... practical problems and structural analysis and heat transfer Important fundamental and classical theories are introduced in a straightforward and easy to understand fashion Modern, state-of-the-art ... COMPUTATIONAL MODELLING Conceptual design Modelling Physical, mathematical, computational, and operational, economical Simulation Experimental, analytical, and computational Analysis Photography,...
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liu quek the finite element method a practical course
... package comfortably to solve practical problems and structural analysis and heat transfer Important fundamental and classical theories are introduced in a straightforward and easy to understand ... Chapter 7: Formulates the finite element matrices for 2D solids Matrices for linear triangular elements, bilinear rectangular and quadrilateral elements are derived in detail Area and natural ... publishers British Library Cataloguing in Publication Data A catalogue record for this book is available from the British Library Library of Congress Cataloguing in Publication Data A catalogue record...
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báo cáo hóa học:" Can medio-lateral baseplate position and load sharing induce asymptomatic local bone resorption of the proximal tibia? A finite element study" pot
... (b) Average7 Average VonMises stresses in the lateral ROI plotted versus load share (a) and positioning (b) A 0% lateral share means that the entire load was applied on the medial area A negative ... interfacial ROI plotted versus load share (a) and baseplate position (b) Average6 Average VonMises stresses in the interfacial ROI plotted versus load share (a) and baseplate position (b) A 0% lateral ... (b) A 0% lateral share means that the entire load was applied on the medial area A negative baseplate positioning means a shift of the component towards the lateral side Page of 15 (page number...
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CHL - A Finite Element Scheme for Shock Capturing_1 pdf
... applicable outside the field of hydraulics as well to complex aerodynamic tlow fields containing shocks Basic Equations The basic equations that are addressed are the 2-D shallow-water equations ... (Technical report ; HL-93-12) Includes bibliographical references Hydraulic jump - Mathematical models 2, Hydrodynamics Shock (Mechanics) - Mathematical models Finite element method I United States Assistant ... Assistant Secretary of the Army (Research, Development and Acquisition) 11 U.S Army Engineer Waterways Experiment Station Ill In-house Laboratory Independent Research Program (U.S Army Engineer Waterways...
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CHL - A Finite Element Scheme for Shock Capturing_3 doc
... which can detect shocks and increase a automatically The method we employ detects energy variation for each element and flags those elements which have a high variation as needing a larger value ... to actual flume data The comparisons are made to the water surface heights and timing of the shock passage The final case is a steady-state comparison to flume data reported in Ippen and Dawson ... flume data, for which discrepancy will be due to the hydrostatic assumption made in the shallowwater equations Instead we have a direct way of evaluating the numerical scheme alone As spatial and...
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CHL - A Finite Element Scheme for Shock Capturing_4 pdf
... arrival is late by about 0.2 and 0.15 sec at stations and 8, respectively The flume at stations and has a earlier arrival time for the outer wave connpared to the inner wave The numerical model does ... wall is designated by squares and the outside by diamonds Of particular importance is the arrival time of the shock front At station the numerical prediction of arrival time using of 1.0 is about ... breach The basic element length in the channel is 0.1 m and there are five elements across the channel width For the smooth channel case, Bell, Elliot, and Chaudhry (1992) used a 1-D calculation...
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CHL - A Finite Element Scheme for Shock Capturing_5 potx
... indicates nondimensional quantities and o as a subscript indicates a constant, and These equations can be diagonalized by defining a new variable such that P : A ~ P , where Chapter Testing = A, ... reach the smallest time-step Again if we are within the shock at a depth where there is an upstream propagating wave (subcritical), is there a Courant number C that has a relative speed greater ... the spatial node location We now present the results of this analysis for a = 112 and for the temporal derivative parameter at of 1.0 and 1.5 We shall compare the relative amplitude and relative...
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CHL - A Finite Element Scheme for Shock Capturing_6 potx
... Von Neumann, J., and Richtmyer, R D (1950) "A method for the numerical calculation of hydrodynamic shocks," Journal of Applied Physics 21, 232237 Walters, R A. , and Carey, G F (1983) "Analysis ... within an element The veracity of the model is tested by comparison of the predicted jump speed and magnitude with nalytic and flume results A comparison is also made to a flume case of steady-state ... ocean; Part 1, Design of a finite element barotropic model," Journal of Physical Oceanography 8, 323-343 Steger, J L., and Warming, R F (1981) "Flux vector splitting of the inviscid gas dynamics...
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A Finite Element Scheme for Shock Capturing ppt
... Platzman (1978) or Walters and Carey (1983)) Typically, these are chosen as depth as an elemental constant and velocity as linear, or depth linear and velocity as a quadratic This approach effectively ... which can detect shocks and increase a automatically The method we employ detects energy variation for each element and flags those elements which have a high variation as needing a larger value ... to actual flume data The comparisons are made to the water surface heights and timing of the shock passage The final case is a steady-state comparison to flume data reported in Ippen and Dawson...
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Family of Uniform Strain Tetrahedral Elements and a Method for Connecting Dissimilar Finite Element Meshes ppt
... azl azl all asl asl o aol 00 aol 00 o —all 00 —asl O o o asl 00 (@’w’@ )-’@’w = 00 azn asn o aln o azl all a3 n a2 ,n o 00 ah aln aoz o —azz 0 –asn o o aoz o 00 aol O —alz 00 —azl —aBz O ... constant strain elements As the reader may have ascertained, the least squares approach does not explicitly make use of conventional shape functions that interpolate the nodal displacements Although ... and ~’s are the constant normal and shear strains of the element and the r’s are associated \vit rigid body translations and rotations h The element formulation is based on a least squares fit...
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Báo cáo nghiên cứu khoa học: " ABOUT A STRAIN SMOOTHING TECHNIQUE IN FINITE ELEMENT METHOD" pps
... available as given by Reference [5] Figure illustrates a uniform mesh with 512 quadrilateral elements y A D P x L Figure A cantilever beam and boundary conditions The relative error in displacement ... local strain field This technique is also known as strain smoothing stabilization, through which the nodal strain is computed through the divergence of a spatial average of the standard local ... isotropic plasticity and viscoplasticity, etc 4.NUMERICAL RESULTS 4.1 Cantilever beam A 2-D cantilever beam subjected to parabolic loading at the free end is examined in this example as shown in...
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A Finite Element Scheme for Shock Capturing Part 1 potx
... is applicable outside the field of hydraulics as well to complex aerodynamic tlow fields containing shocks Basic Equations The basic equations that are addressed are the 2-D shallow-water equations ... August 1993 Waterways Experiment Station Cataloging-in-Publication Data Berger, Rutherford C A finite element scheme for shock capturing / by R.C Berger, Jr., ; prepared for Assistant Secretary ... models Finite element method I United States Assistant Secretary of the Army (Research, Development and Acquisition) 11 U.S Army Engineer Waterways Experiment Station Ill In-house Laboratory Independent...
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A Finite Element Scheme for Shock Capturing Part 2 pptx
... order basis than does the velocity (see, e.g., Platzman (1978) or Walters and Carey (1983)) Typically, these are chosen as depth as an elemental constant and velocity as linear, or depth linear and ... Calerkin approach and an approach to develop a Petrov-Galerkin test function Chapter Numerical Approach Petrov-Galerkin formulation First we will illustrate the problem that discrete formulations ... looks at the solution of a differential equation in a weighted average sense In the Galerkin approach the test function is identical to the basis function This method can have difficulty with advection-dominated...
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A Finite Element Scheme for Shock Capturing Part 3 ppsx
... which can detect shocks and increase a automatically The method we employ detects energy variation for each element and flags those elements which have a high variation as needing a larger value ... calculated by Chapter Numerical Approach where SZi = element i E = mechanical energy a; = area of element i and I?;, the average energy of element i, is calculated by and E = the average element ... initially constant and supercritical; then the lower boundary is shut so that a wall of water is formed that propagates upstream This speed can be determined analytically, and a comparison is made...
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A Finite Element Scheme for Shock Capturing Part 4 docx
... so there was no need to go to smaller grid spacing Values of C, less than appear to lag the analytic shock and Cs greater than leads the analytic shock With the largest C, the calculated shock ... defined as MlAh Here h is the depth and Ah is the analytic depth difference across the shock, 0.1 m The error was a s small as was detectable by the technique for measurement of speed at AX = 0.4 ... constructed of Plexiglas and simulates a dam break through a horseshoe bend This is a more general comparison than Case Here the problem is truly 2-D and we now are comparing to hydraulic flume results,...
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