A Method of Early Warning of Engineering Structure Failure
What is AI technical title?
AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
An engineering structure and finite element technology, applied in the direction of instrumentation, geometric CAD, calculation, etc., can solve problems such as failure warning of engineering structures, inapplicability of engineering structures, inability to apply engineering structures, etc., to improve work safety and stability, Effects of accident prevention and accurate failure prediction
Active Publication Date: 2019-09-27
KUNMING UNIV OF SCI & TECH
View PDF3 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0003] However, traditional failure analysis techniques are aimed at materials and simple samples, and the various empirical formulas in them are not applicable to engineering structures and fail to reflect the overall status of engineering structures. Moreover, traditional failure analysis techniques are post-mortem analysis and cannot be applied to operating and the engineering structure in the process of failure, that is, the failure warning cannot be given to the engineering structure
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 more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0033] Embodiment 1: as Figure 1-2 Shown, a kind of engineering structure failure early warning method, the concrete steps of described engineering structure failure early warning method are as follows:
[0034] Step 1. According to the engineering structure design specification, obtain the design parameter Young's modulus E of the engineering structure 0 , and the design safety factor of the engineering structure [S];
[0035] Step 2, let the initial detection time node i=1;
[0036] Step 3. Calculate the corresponding average Young's modulus E of the engineering structure at the current time node i through finite element software i , where i=1, 2, 3...;
[0037] Step 4. Judgment E i Is it less than or equal to E 0 / [S];
[0038] If E i less than or equal to E 0 / [S], then give early warning to the engineering structure, otherwise according to E n Scattered distribution of (n=1,2,3...i), the function E=f(i) is fitted to predict the average Young's modulus E at the...
Embodiment 2
[0054] Embodiment 2: as Figure 1-2 Shown, a kind of engineering structure failure early warning method, the concrete steps of described engineering structure failure early warning method are as follows:
[0055] Step 1. According to the engineering structure design specification, obtain the design parameter Young's modulus E of the engineering structure 0 =10 10 Pa, and the design safety factor of the engineering structure [S] = 1.25;
[0056] Step 2, let the detection time node i=10;
[0057] Step 3. Calculate and obtain the corresponding average Young's modulus E of the engineering structure at the current time node i=10 through finite element software 10 ,E 10 =8.21×10 9 Pa;
[0058] Step 4. Judgment E 10 Is it less than or equal to E 0 / [S], where E 0 / [S]=8×10 9 Pa;
[0059] E. 10 greater than E 0 / [S], then according to E n (n=1,2,3...10) scattered point distribution, fitting the function E=E 0 -0.2×(i-1), predict the average Young's modulus E at the ...
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 relates to a failure early-warning method of an engineering structure, and belongs to the technical field of failure analysis of the engineering structure. The method comprises the steps of firstly, calculating an average young modulus of the engineering structure by means of hypothetic calculation young modulus of the engineering structure, a node displacement matrix, calculated by finite element software, of the engineering structure and an actual node displacement matrix, acquired by measurement, of the engineering structure; and finally, performing corresponding failure early-warning on the engineering structure according to contrast between the average young modulus and a safety young modulus of the engineering structure. By calculating the average young modulus of the engineering structure, the integral state of the engineering structure can be accurately and comprehensively reflected, failure early-warning is performed on the engineering structure in the running process and in the failure process, and an accident is prevented; and meanwhile, failure forecast can be accurately performed on the next working condition of the engineering structure, and the working safety and stability of the engineering structure are improved.
Description
technical field [0001] The invention relates to an engineering structure failure early warning method, which belongs to the technical field of engineering structure failure analysis. Background technique [0002] With the passage of time, after the engineering structure is completed and put into use, the aging effect of the material will cause the Young's modulus of the engineering structure to change accordingly during the use process, which will eventually cause the failure of the engineering structure and lead to accidents. Therefore, it is necessary to carry out effective early warning of failure of the engineering structure to prevent the occurrence of accidents. [0003] However, traditional failure analysis techniques are aimed at materials and simple samples, and the various empirical formulas in them are not applicable to engineering structures and fail to reflect the overall status of engineering structures. Moreover, traditional failure analysis techniques are pos...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More