Rolling stone impact force calculation method suitable for rotation function

A calculation method and impact force technology, applied in the field of rolling rock impact force calculation, can solve the problems of not considering the impact of rolling and rotating kinetic energy of rolling stones on the impact force, the inconsistency of physical dimensions, and the large calculation limitations, so as to improve the reliability of disaster prevention. The effect of high disaster prevention applicability and accurate calculation results

Active Publication Date: 2017-10-24
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Calculate the impact force based on the energy of the rolling stone, but this method does not consider the material characteristics of the impacting object and the impacted object, and the impact force calculation for different materials lacks accuracy
[0005] 2. Taking the elastic modulus of the buffer layer as the main consideration, and considering the parameters such as the speed and mass of the rolling stone to calculate the impact force, but without considering the material properties of the impacting object and other material properties of the impacted object, the calculation has great limitations
[0006] 3. Considering the material properties and elastic modulus of the impacting object and the impacted object, but the physical dimension of the calculation formula is not harmonious, and the results will have large deviations at different scales
[0007] 4. Study the relationship between the impact force and the mass, velocity, elastic modulus of the rolling stone, and the elastic modulus of the impacted object from the principle of dimensional analysis, but this method only considers the translational motion speed of the rolling stone, and does not consider the rolling of the rolling stone The influence of rotational kinetic energy on the impact force at time, the result has error
[0009] The calculation method of the impact force of the rolling stone disclosed in this patent document only considers the translational motion velocity of the rolling stone, and does not consider the impact of the rotational kinetic energy of the rolling stone on the impact force, so it cannot be applied to the calculation of the impact force of the rolling stone with rotational kinetic energy

Method used

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  • Rolling stone impact force calculation method suitable for rotation function
  • Rolling stone impact force calculation method suitable for rotation function
  • Rolling stone impact force calculation method suitable for rotation function

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Effect test

Embodiment 1

[0046] A method for calculating the impact force of rolling stones suitable for rotational kinetic energy, comprising the following steps:

[0047] a. Obtain the elastic modulus E of rolling stone 1 , unit Pa, elastic modulus E of impacted object 2 , unit Pa, calculate comprehensive elastic modulus E according to formula 1, unit Pa;

[0048]

[0049] b. Estimate the kinetic energy E of the rolling stone K , the unit is J, the angle θ between the moving direction of the rolling stone and the plane of the impacted object, the unit is degree, and the impact force F of the rolling stone is calculated according to formula 2, the unit is N;

[0050]

[0051] The present invention, "a, obtain rolling stone elastic modulus E 1 , unit Pa, elastic modulus E of impacted object 2 , unit Pa, calculate the comprehensive elastic modulus E according to formula 1, unit Pa; b, estimate the kinetic energy E of the rolling stone K , the unit is J, the angle θ between the moving directi...

Embodiment 2

[0053] A method for calculating the impact force of rolling stones suitable for rotational kinetic energy, comprising the following steps:

[0054] a. Obtain the elastic modulus E of rolling stone 1 , unit Pa, elastic modulus E of impacted object 2 , unit Pa, calculate comprehensive elastic modulus E according to formula 1, unit Pa;

[0055]

[0056] b. Estimate the kinetic energy E of the rolling stone K , the unit is J, the angle θ between the moving direction of the rolling stone and the plane of the impacted object, the unit is degree, and the impact force F of the rolling stone is calculated according to formula 2, the unit is N;

[0057]

[0058] In the step b, the rolling stone kinetic energy E K Including rolling stone translational kinetic energy E t with the Rolling Stones Rotary Kinetic E r , Rolling Stone Kinetic Energy E K Calculated by formula 3;

[0059] E. k =E t +E r =0.5mV 2 +0.5Iw 2 =(1+β)E t (Formula 3)

[0060] in:

[0061] E. t —The...

Embodiment 3

[0069] A method for calculating the impact force of rolling stones suitable for rotational kinetic energy, comprising the following steps:

[0070] a. Obtain the elastic modulus E of rolling stone 1 , unit Pa, elastic modulus E of impacted object 2 , unit Pa, calculate comprehensive elastic modulus E according to formula 1, unit Pa;

[0071]

[0072] b. Estimate the kinetic energy E of the rolling stone K , the unit is J, the angle θ between the moving direction of the rolling stone and the plane of the impacted object, the unit is degree, and the impact force F of the rolling stone is calculated according to formula 2, the unit is N;

[0073]

[0074] In the step b, the rolling stone kinetic energy E K Including rolling stone translational kinetic energy E t with the Rolling Stones Rotary Kinetic E r , Rolling Stone Kinetic Energy E K Calculated by formula 3;

[0075] E. k =E t +E r =0.5mV 2 +0.5Iw 2 =(1+β)E t (Formula 3)

[0076] in:

[0077] E. t —The...

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Abstract

The invention discloses a rolling stone impact force calculation method suitable for a rotation function and belongs to the field of collapse and rockfall prevention engineering technology. The method comprises the steps that a, elasticity modulus E1 and unit Pa of rolling stone and elasticity modulus E2 and unit Pa of an impacted object are obtained, and integrated elasticity modulus E and unit Pa are calculated according to the formula 1; and b, kinetic energy EK of the rolling stone, unit J, an plane included angle between the motion direction of the rolling stone and the impacted object and a unit degree are estimated, and the impact force F of the rolling stone and unit N are calculated according to the formula 2. Through the method, all impact force can be obtained through calculation according to obtained impact matter amount, motion speed, the plane included angle between the motion direction and the impacted object, the elasticity modulus, the elasticity modulus of the impacted object and other parameters without limitations of materials and the kinetic energy type of the rolling stone, and the calculation method is suitable for field large-scale actual calculation and has higher disaster prevention applicability for prevention and reduction of collapse and rockfall.

Description

technical field [0001] The invention relates to the technical field of collapse and rockfall prevention engineering, in particular to a method for calculating the impact force of rolling stones applicable to rotational kinetic energy. Background technique [0002] Collapse and rockfall are natural phenomena that occur in mountainous areas or on road slopes. After landslides and rockfalls occur, huge rocks roll down the hillside or roadside, causing great damage to nearby residential buildings, factories and other construction facilities, or roads. [0003] At present, there are mainly four methods for calculating the impact force of rolling stones at home and abroad: [0004] 1. Calculate the impact force based on the energy of the rolling stone, but this method does not consider the material characteristics of the impacting object and the object being impacted, and the calculation of the impact force of different materials is not accurate. [0005] 2. Taking the elastic m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20G06F2119/06
Inventor 余斌易伟赵怀宝
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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