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Free lossless audio codec (FLAC) finite difference software-based method for generating dynamic modulus of elasticity

A finite difference and elastic coefficient technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of cumbersome operation, unfavorable structural dynamic calculation, and low practicability, and achieve simple operation, high reliability, Ease of use

Inactive Publication Date: 2011-07-27
BEIJING UNIV OF TECH
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Problems solved by technology

The value of the dynamic elastic coefficient of the formation is related to the formation conditions, the shape and size of the structure, and the buried depth, and it also changes with the strain of the formation. In practical applications, the finite difference software FLAC can be used to comprehensively consider these factors. However, since FLAC calculates the dynamic elastic coefficient of the formation It is cumbersome and is not conducive to the next step of structural dynamic calculation. It is not practical and is often criticized by engineers.

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  • Free lossless audio codec (FLAC) finite difference software-based method for generating dynamic modulus of elasticity
  • Free lossless audio codec (FLAC) finite difference software-based method for generating dynamic modulus of elasticity
  • Free lossless audio codec (FLAC) finite difference software-based method for generating dynamic modulus of elasticity

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Embodiment Construction

[0033] refer to figure 2 , the present invention provides a method for generating dynamic elastic coefficients of formation based on FLAC finite difference software, comprising:

[0034] Step 1. In the FLAC finite difference software, input the coordinates of the perimeter of the rectangular hole and the boundary coordinates of the surrounding soil, then divide the grid as a whole, assign the model material parameters, determine the boundary conditions, perform static balance calculations under the gravity field, and then excavate The internal grid around the rectangular hole forms a regional grid with both inner and outer boundaries being rectangular;

[0035] Step 2: In the FLAC finite difference software, the mouse mark takes the node number of the boundary grid around the rectangular hole, and the horizontal node number of the left boundary is i1, the horizontal node number of the right boundary is i2, and the vertical node number of the lower boundary is j1 , the vertic...

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Abstract

The invention provides a free lossless audio codec (FLAC) finite difference software-based method for generating dynamic elasticity coefficient. On the basis of FLAC finite difference software, the method comprises the following main steps: inputting the number of nodes on the boundary of a hole; generating a command stream file which can be identified by the FLAC finite difference software; calling in the generated command stream file in the FLAC finite difference software; acquiring counter force acted on each node on the boundary of the hole calculated by the FLAC finite difference software according to the command stream; inputting coordinates of arbitrary two vertexes on diagonal lines on the periphery of the hole; and calculating the elasticity coefficient of a hole peripheral structural plane according to the steps above, and outputting a result. The easy input and output of the method provides important basis for underground structure power calculation.

Description

technical field [0001] The invention belongs to the technical field of software and is used for generating the dynamic elastic coefficient of the ground in the seismic design of the underground structure. Background technique [0002] From the development of seismic design methods at home and abroad in recent years, it can be seen that the guiding ideology of seismic design of underground structures has gradually developed from the traditional strength judgment to the design principle of deformation control, such as the response displacement method. The relationship is extremely complicated. During the calculation, it is assumed that the structure and the formation are connected by various springs, and the calculation and analysis model of the structure is taken as figure 1 . The value of the dynamic elastic coefficient of the formation is related to the formation conditions, the shape and size of the structure, and the buried depth, and it also changes with the strain of t...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 陶连金王文沛张波李文博魏云杰
Owner BEIJING UNIV OF TECH
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