A Modeling Method of Fast Reactor Body Seismic Test Considering Fluid-Structure Coupling Effect
A fluid-structure coupling, seismic test technology, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve problems such as difficulty in proportional relationship, difficulty in determining additional damping, and difficulty in determining model mass and stiffness.
Active Publication Date: 2021-09-28
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, it is very difficult to determine the additional mass and additional damping in the additional mass method.
In the spring-mass model, the more famous one is the Housner model. In the model, the pressure of the liquid on the structure is divided into pulse pressure and convective pressure, but there are certain difficulties in determining the proportional relationship between the two, and the mass and stiffness in the model are also very large Difficult to determine
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0063] In order to verify the similar modeling method described above and the similar relational formula obtained, in the present invention, the ANSYS classic module is used to model, and the prototype stack and the 1 / 8 magnesium alloy scale model are modeled and calculated respectively, and the material of the model stack is For magnesium alloy, the model is strictly based on the modeling method and the added additional mass. The material of the prototype pile is steel. Both the prototype pile and the scale model retain the structure and connection method of the main internal components. In the process of establishing the finite element model, the present invention uses shell elements to establish the container wall, and uses Shell63 elastic shell elements to discrete the whole model such as the bottom head of the stack body, the cylinder body, the cone top cover, and the internal main pump and heat exchanger. , In addition, the supporting skirt and the bottom connecting squar...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention belongs to the technical field of nuclear power energy, and particularly relates to a fast reactor body seismic test modeling method considering the fluid-solid coupling effect, including: considering the fluid-solid coupling interaction, using the action control equation analysis method to calculate and obtain the fluid-solid coupling model The general dynamic similarity relationship of the general dynamics; using the additional mass determination method, according to the principle of satisfying the solid dynamic similarity relationship, the additional mass is obtained to correct the overall mass of the model, so that the Froude number strictly satisfies the similarity relationship; the fluid parameters are calculated by using the dimensional analysis method dynamic similarity relationship. The invention adopts magnesium alloy material, calcium chloride simulates liquid sodium, and makes the Froude number strictly satisfy the similarity relationship by adding additional mass, and controls the similarity ratio of acceleration to be 1, and obtains a set of reasonable and accurate similarity ratios , including the similarity ratio of the natural frequency, stress, and displacement of the structure, and the similarity ratio of the natural frequency, wave height, and pressure of the liquid sloshing.
Description
technical field [0001] The invention belongs to the technical field of nuclear power energy, and in particular relates to a fast reactor body seismic test modeling method considering the fluid-solid coupling effect. Background technique [0002] In engineering practice, the coupling vibration between liquid sloshing and structure of liquid storage container is a very common and important problem. Since this type of coupling problem involves disciplines such as fluid mechanics, solid mechanics, structural dynamics, computational mechanics and mathematics, its mechanism It is very complicated and difficult to discuss the essence and nature, but solving such coupling problems is of great significance to nuclear power equipment, chemical containers, aerospace, transportation and other fields. [0003] The seismic design of the fast reactor body is an important subject of fast reactor design. According to my country's nuclear safety regulations, the reactor body belongs to the fi...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/28G06F119/14G06F113/06
CPCG06F30/23
Inventor 陆道纲刘宏达保广栋李奕彤
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)