Flexible rope modeling method based on linear interpolation shape function

A linear interpolation and shape function technology, which is applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of large computing time, high computing resource requirements, and long time consumption, and achieve long computing time and high cost. The effect of high calculation accuracy and calculation time economy

A linear interpolation and shape function technology, which is applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of large computing time, high computing resource requirements, and long time consumption, and achieve long computing time and high cost. The effect of high calculation accuracy and calculation time economy

CN113051678APending Publication Date: 2021-06-29BEIJING MECHANICAL EQUIP INST
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  • Flexible rope modeling method based on linear interpolation shape function
  • Flexible rope modeling method based on linear interpolation shape function
  • Flexible rope modeling method based on linear interpolation shape function

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Embodiment Construction

[0065] The present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that the following examples are only for illustrating and explaining the present invention, and should not be construed as limiting the protection scope of the present invention. All technologies realized based on the above contents of the present invention are covered within the scope of protection intended by the present invention.

[0066] A kind of flexible rope modeling method based on linear interpolation shape function provided by the present invention, its specific steps are:

[0067] The first step is to use the rope configuration at a predetermined moment as the reference configuration space to identify the position of any rope point on the rope configuration at the current moment in space;

[0068] The second step is to define the Green strain tensor of the rope;

[0069] The third step is to calculate the stress of any rope poin...

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Abstract

The invention provides a flexible rope modeling method based on a linear interpolation shape function, and the method considers two aspects of calculation time and calculation precision. The method overcomes the defects that in the prior art, a concentrated mass method is fastest in calculation speed but low in precision, and a nonlinear finite element method based on absolute node coordinates is long in calculation time, but high in precision and the like, and a nonlinear rope unit adopting two nodes is moderate in calculation time and high in calculation precision, the method has the characteristics of calculation time economy and high precision, can meet engineering application requirements, and is a relatively reasonable choice for flexible interception net rope modeling.

Description

technical field [0001] The invention belongs to the technical field of rope modeling, in particular to a flexible rope modeling method based on a linear interpolation shape function. Background technique [0002] The flexible rope has the advantages of light weight, high strength and easy folding storage. The flexible interception net woven by flexible ropes has a large expansion area and is very easy to hook and entangle with the target. The adaptability to the shape and motion state of the target is far greater than the conventional capture method. It has been widely used in aircraft target capture. Modeling helps to analyze the dynamics of the rope’s lateral and longitudinal motion and local forces. However, since flexible ropes are usually woven from organic fibers, their internal structures are very complex. Modeling methods are computationally time-intensive and do not yield significant improvements in accuracy. At present, the commonly used rope modeling methods in...

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Application Information

Patent Timeline
29 Jun 2021
Publication
CN113051678A
IPC
G06F30/17; G06F30/23; G06F119/14
CPC
G06F30/17; G06F30/23; G06F2119/14; Y02T90/00
Inventors
卞伟伟; 侯师