Information processing device, system, program, presentation method

Abstract

The present invention provides a new technique for easily determining the elastic constant of an object having a complex shape.　This information processing device comprises: an acquisition unit that acquires measurement results obtained by measuring the resonance frequency of an object and a vibrational mode at the resonance frequency; and a determination unit that presents an elastic constant on the basis of a plurality of inputted elasticity values and the measurement results. The determination unit creates, by using the plurality of inputted elasticity values, a first contour diagram of the object in each estimated vibrational mode at an estimated resonance frequency, creates a second contour diagram in each measured vibrational mode at a measured resonance frequency which corresponds to the estimated resonance frequency and which is based on the measurement results, updates the inputted elasticity values by using a genetic algorithm on the basis of the similarity degree between the first contour diagram and the second contour diagram, and presents the elastic constant on the basis of inputted elasticity values that satisfy setting conditions.

Claims

1. An acquisition unit that acquires measurement results by measuring the resonance frequency of the object and the vibration mode at the resonance frequency, A determination unit that presents an elastic constant based on multiple input elastic values ​​and the measurement results, Equipped with, The aforementioned determination unit, Using the aforementioned multiple input elastic values, a first contour plot is created for each estimated vibration mode at the estimated resonance frequency of the object. A second contour map is created for each measured vibration mode at the measured resonance frequency corresponding to the estimated resonance frequency based on the measurement results. The first contour plot and the second contour plot are meshed, and vectors based on the mesh color are obtained. Based on the similarity between the first contour plot and the second contour plot obtained based on the aforementioned vector, the input elasticity value is updated by a genetic algorithm. Based on the input elastic value that satisfies the set conditions, the elastic constant is presented. Information processing device.

2. The aforementioned similarity is cosine similarity. The information processing apparatus according to claim 1.

3. The determination unit readjusts the input elasticity value if the similarity is less than or equal to the set value. The information processing apparatus according to claim 1.

4. The acquisition unit projects the three-dimensional deformation of the object onto three mutually orthogonal planes, The determination unit presents the elastic constants based on the estimated vibration modes at the estimated resonance frequencies in each of the three planes. The information processing apparatus according to claim 1.

5. The aforementioned multiple input elasticity values ​​are nine variables. A determination unit that determines whether the object is an orthotropic material, an in-plane isotropic material, or an isotropic material based on the elastic constant presented by the determination unit, An output unit that outputs the determination result of the determination unit, Equipped with, The information processing apparatus according to claim 1.

6. The system includes an output unit that outputs the first contour diagram and the second contour diagram in a comparative manner, The output unit outputs the second contour plot, which is updated in accordance with the update of the input elasticity value. The information processing apparatus according to claim 1.

7. The aforementioned object is an object having viscoelastic properties. The system includes a calculation unit that calculates elastic parameter values ​​for the object based on an analytical model of the object, The determination unit presents an elastic constant based on the plurality of input elastic values, the elastic parameter values, and the measurement results. The information processing apparatus according to claim 1.

8. The object is composed of a first component having viscoelastic properties and a second component different from the first component. The plurality of input elastic values ​​are a plurality of input elastic values ​​relating to the second component. The information processing apparatus according to claim 7.

9. The system includes a viscoelastic properties acquisition unit that acquires the viscoelastic properties of the first component, The calculation unit calculates the elastic parameter value based on the analysis model which is based on the viscoelastic properties and the plurality of input elastic values. The information processing apparatus according to claim 8.

10. A measuring device for measuring the resonant frequency of an object and the vibration mode at the resonant frequency, An information processing device according to any one of claims 1 to 9, A system equipped with these features.

11. A program to be executed by an information processing device comprising: an acquisition unit that acquires measurement results of the resonance frequency of an object and the vibration mode at the resonance frequency; and a determination unit that presents elastic constants based on a plurality of input elastic values ​​and the measurement results, In the aforementioned decision section, Using the aforementioned multiple input elastic values, a first contour plot is created for each estimated vibration mode at the estimated resonance frequency of the object. To create a second contour map for each measured vibration mode at the measured resonance frequency corresponding to the estimated resonance frequency based on the measurement results, The first contour plot and the second contour plot are meshed, and a vector based on the mesh color is obtained. Based on the similarity between the first contour plot and the second contour plot obtained from the aforementioned vector, the input elasticity value is updated by a genetic algorithm. Based on the input elastic value that satisfies the setting conditions, the elastic constant is presented. A program to execute.

12. A method for presenting the elastic constant of an object, To obtain measurement results that measure the resonant frequency of the object and the vibration mode at the resonant frequency, Using multiple input elastic values, a first contour plot is created for each estimated vibration mode at the estimated resonance frequency of the object, To create a second contour map for each measured vibration mode at the measured resonance frequency corresponding to the estimated resonance frequency based on the measurement results, The first contour plot and the second contour plot are meshed, and a vector based on the mesh color is obtained. Based on the similarity between the first contour plot and the second contour plot obtained from the aforementioned vector, the input elasticity value is updated by a genetic algorithm. Based on the input elastic value that satisfies the setting conditions, the elastic constant is presented. A presentation method that includes this.

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