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Improved analysis method for bulk material flow characteristic under unilateral excitation nonlinear unloading system

A technology of bulk materials and analysis methods, applied in special data processing applications, complex mathematical operations, instruments, etc., can solve the problems of variable flow of bulk materials, fatigue wear, unloading equipment can not meet the automatic unloading of bulk materials, etc.

Inactive Publication Date: 2018-07-27
NORTHEASTERN UNIV
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Problems solved by technology

[0002] As the processing of bulk materials develops in the direction of high efficiency, intelligence, energy saving and emission reduction, the current unloading equipment cannot satisfy the stable and automatic unloading of bulk materials to a certain extent, and due to the gap between bulk materials and the vibrating conveying surface , discontinuity between bulk materials, random friction and collision and other complex and changeable working environments, it is easy to cause local abnormal vibration, fatigue wear, flow variability of bulk materials and certain influence on the bulk materials themselves. degree of damage

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  • Improved analysis method for bulk material flow characteristic under unilateral excitation nonlinear unloading system
  • Improved analysis method for bulk material flow characteristic under unilateral excitation nonlinear unloading system
  • Improved analysis method for bulk material flow characteristic under unilateral excitation nonlinear unloading system

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Embodiment Construction

[0074] The specific implementation manners of the present invention will be further described below in conjunction with the drawings and technical solutions.

[0075] The embodiment of the present invention is an improved method for analyzing the flow characteristics of bulk materials in a single-side excitation nonlinear unloading system. The flow chart is as follows figure 1 shown, including the following steps:

[0076] Step 1, determine the dynamic equation of the nonlinear unloading system with one-sided excitation;

[0077] according to figure 2 On the basis of simplifying the physical model of the nonlinear unloading system with one-sided excitation, the expressions of its dynamic differential equations are deduced, and the various expressions are determined;

[0078] Step 1-1, the dynamic equation of the nonlinear unloading system with unilateral excitation is:

[0079]

[0080] In the formula, m is the equivalent mass of the unloading equipment, α is the roll a...

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Abstract

The invention relates to an improved analysis method for a bulk material flow characteristic under a unilateral excitation nonlinear unloading system, and belongs to the field of mechanical-bulk coupling system dynamics modeling. The unilateral excitation nonlinear unloading system with quadratic and cubic nonlinearity and the interaction between a mechanical system and a bulk material are considered at the same time. In addition, a unilateral excitation nonlinearity unloading system-bulk material coupling dynamics model is built; the influence of parameters of the mechanical system and the bulk material on the bulk material flow characteristic under nonlinear vibration is analyzed; and a motion state of the bulk material under the influence of a nonlinear factor and a judgment basis during change of the motion state can be described more really. Compared with other conventional numerical analysis methods, the method has relatively high calculation efficiency and precision. According to the method, the test cost can be greatly reduced, and a reference can be provided for design of a mechanical-bulk coupling system structure to improve system performance and security.

Description

technical field [0001] The invention belongs to the technical field of mechanical-bulk dynamics, and specifically relates to an improved method for analyzing the flow characteristics of bulk materials under a one-sided excitation nonlinear unloading system, in particular to an approximate analytical solution including solving a nonlinear vibration system, A method for solving the interaction between machinery and bulk materials and the fluidity of bulk materials. Background technique [0002] As the processing of bulk materials develops in the direction of high efficiency, intelligence, energy saving and emission reduction, the current unloading equipment cannot satisfy the stable and automatic unloading of bulk materials to a certain extent, and due to the gap between bulk materials and the vibrating conveying surface , discontinuity between bulk materials, random friction and collision and other complex and changeable working environments, it is easy to cause local abnorma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06F17/11
CPCG06F17/11G06F30/17G06F2119/06
Inventor 周世华任朝晖宋桂秋李一鸣孙梦楠
Owner NORTHEASTERN UNIV
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