MECH3300 - Lecture 4

Oct 12, 2012

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Displacement interpolation. In 2 or 3D, in order to write equations at nodes, we must approximate boundary conditions between the nodes somehow.Suppose we assume a linear displacement variation between the values at 2 corner nodes. This implies a particular variation of load per length along that

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MECH3300 - Lecture 4

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MECH3300 Finite element methods

MECH3300 Finite element methods. Lecture 10 Issues in modelling Solving the equations. Use of symmetry.

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MECH3300 Finite element Methods

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Lecture 4

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MECH3300 Finite Element Methods Lecture 3

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MECH3300 Finite Element Methods

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Lecture 4

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Lecture 4

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MECH3300 Energy methods of hand calculation

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MECH3300 Finite Element Methods

Estimation of stress intensity. For well-known crack geometries, K or G can be found from formulae or charts. For more general cases, a finite element model can be used, both to estimate K and to predict growth of a crack.Several methods can be used to make FE estimates of KI. (1) Use the stres

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MECH3300 Finite Element Methods

Orthotropic materials. Most packages accept data for orthotropic materials those for which 3 perpendicular axes the principal material axes exist. These can have 3 Young's modulii and 3 Poisson ratios. Often both directions transverse to a fibre are the same, so that we can specify just a lo

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MECH3300 Finite Element Methods

Concepts. Node - a generalised joint - connection point at which equations are written - there are at most 6 unknowns (degrees of freedom) at a node (3 displacements, 3 rotations)Element - connection between a group of nodes representing stiffness or other properties approximately- interpolation of displacement between the nodal values is used - this becomes more accurate as element size is reducedReference node - an extra point used to orient the cross-section of a beam.

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Lecture 4

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Lecture 4

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Lecture 4

Lecture 4. Noise, signal/noise ratio, detection limit. Standard analytical terminology. Electronics. Value (mean, average) Standard deviation Relative standard deviation(RSD). Signal Noise Signal-to-noise ratio (S/N) . A noisy set of data.

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Lecture 4

Lecture 4. 1. Review superposition principle and dipole field pattern. Field Pattern of Charge:. Method of Parallelogram:. Clicker 4-1. Clicker 401: Dipole field pattern and dipole interaction. Field at a point P. Digression on small epsilon expansion. General Formula: .

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LECTURE # 4

PHYS 420-SPRING 2006 Dennis Papadopoulos. LECTURE # 4. DOPPLER –SPACETIME DIAGRAMS. REVIEW. Last week we learned that length and time are not absolute, but instead, depend on the frame of reference of the observer. We derived the relations:. time dilation. length contraction.

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Lecture 4

Lecture 4. ARP and RARP. Objectives. Upon completion you will be able to:. Understand the need for ARP Understand the cases in which ARP is used Understand the components and interactions in an ARP package Understand the need for RARP. Figure 4.1 ARP and RARP.

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Lecture 4

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