US 2020/0026808 A1Published application

Drop test analysis and optimization

AssigneeAutodesk, Inc.

InventorsRavi Kumar Burla, Jaesung Eom, Yuri Kizimovich

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Abstract

A method, apparatus, and system provide the ability to perform a drop test using a response surface. Inputs including a target safety factor (T-SF), a drop height, and a computer model, are acquired. An initial template is evaluated by computing a safety factor for a set of orientations, for each model point MP in the computer model across a set of times (t). A minimum safety factor is determined and a response surface for the model is generated. An actual safety factor SFm is generated by conducting a drop test simulation of the model based on a point having the minimum safety factor and a corresponding orientation. Consistency/validity of the actual safety factor is compared to the target safety factor and the model either passes or additional points may be added to the set of points and the process repeats based on an updated response surface.

Claims18

Dependent claims

A computer-implemented method for performing a drop test using a response surface comprising:

(a) acquire inputs comprising a target safety factor (T-SF), a drop height, and a computer model, wherein the computer model comprises model points MP;
(b) evaluating on an initial template, wherein:
(1) the initial template comprises a set of points P in parametric space, wherein the set of points P corresponds to a set of orientations;
(2) each point P in the set of points in the parametric space corresponds to an orientation of the computer model;
and
(3) the evaluating comprises:
(i) computing a safety factor at each orientation, in the set of orientations, for each model point MP in the computer model across a set of times (t);
(ii) for each model point MP, determining a minimum safety factor from the computed safety factors across the set of times (t);
(c) generating a response surface, for the entire computer model, in the parametric space based on the determined minimum safety factors, wherein:
(1) the response surface passes through the points P, in the parametric space, and is based on the determined minimum safety factors;
(2) the generating comprising computing, based on the response surface, a point Pm in the parametric space, having an approximate global minimum safety factor on the response surface, wherein the point Pm has a corresponding orientation;
(d) generating an actual safety factor SFm comprising evaluating the point Pm by conducting a drop test simulation of the computer model based on the point Pm's corresponding orientation, and the drop height;
(e) determining whether the actual safety factor SFm is consistent with the target safety factor (T-SF);
when the actual safety factor SFm is inconsistent with the target safety factor (T-SF), reporting that the computer model has failed the drop test;
(g) when the actual safety factor SFm is consistent with the target safety factor (T-SF), determining whether the actual safety factor SFm is valid;
(h) when the actual safety factor SFm is valid, reporting that the computer model has passed the drop test;
and
(i) when the actual safety factor SFm is invalid, adding the point Pm to the set of points and returning to step (c).

15 more elements

A system for performing a drop test using a response surface comprising:

(a) a computer;
(b) a drop test analysis application executing on the computer;
(c) inputs, acquired by the drop test analysis application, wherein the inputs comprise a target safety factor (T-SF), a drop height, and a computer model, and wherein the computer model comprises model points MP;
(d) an initial template evaluated by the drop test analysis application, wherein:
(1) the initial template comprises a set of points P in parametric space, wherein the set of points P corresponds to a set of orientations;
(2) each point P in the set of points in the parametric space corresponds to an orientation of the computer model;
and
(3) the drop test analysis application evaluates by:
computing a safety factor at each orientation, in the set of orientations, for each model point MP in the computer model across a set of times (t);
(ii) for each model point MP, determining a minimum safety factor from the computed safety factors across the set of times (t);
(e) a response surface, generated by the drop test analysis application, for the entire computer model, in the parametric space based on the determined minimum safety factors, wherein:
(1) the response surface passes through the points P in the parametric space and is based on the determined minimum safety factors;
(2) the response surface is generated by computing, based on the response surface, a point Pm having an approximate global minimum safety factor on the response surface, wherein the point Pm has a corresponding orientation;
(f) an actual safety factor SFm, generated by the drop test analysis application, wherein the SFm is generated by evaluating the point Pm by conducting a drop test simulation of the computer model based on the point Pm's corresponding orientation, and the drop height;
wherein the drop test analysis application further:
(g) determines whether the actual safety factor SFm is consistent with the target safety factor (T-SF);
(h) when the actual safety factor SFm is inconsistent with the target safety factor (T-SF), reports that the computer model has failed the drop test;
(i) when the actual safety factor SFm is consistent with the target safety factor (T-SF), determines whether the actual safety factor SFm is valid;
(j) when the actual safety factor SFm is valid, reports that the computer model has passed the drop test;
and
(k) when the actual factor SFm is invalid, adds the point Pm to the set of points and returning to (e) to generate the response surface based on the set of points that includes point Pm.

18 more elements

Dependencies are inferred from the claim text.