6 results about "Force curves" patented technology

The invention discloses an anti-slide pile cantilever section internal force and displacement calculation method, equipment and a medium, and relates to the technical field of engineering design, and the method comprises the following steps: solving a time-varying support reaction field parameter set and a cantilever section depth computational domain execution structural mechanics equation, and generating a predicted displacement curve and a predicted internal force curve; reconstructing the predicted displacement curve and the predicted internal force curve into a high-order tensor field, extracting local response correlation features through a depth separable convolution kernel, and generating a coupling response feature field; based on the coupling response characteristic field, reverse constraint correction is carried out on the time-varying support reaction field parameter set, combined solving is carried out in combination with a cantilever section depth calculation domain, and a correction displacement curve and a correction internal force curve are generated. According to the method, the space-time Gaussian process prior model is constructed, in computer-aided engineering, the internal force and displacement prediction precision is improved, and the reliability and applicability of cantilever section structure analysis under the complex stratum condition are achieved.

To provide a method for measuring dynamic physical properties with which it is possible to prevent variations in the push-in amount of a probe without determining a contact point.SOLUTION: A method for measuring dynamic physical properties according to the present invention includes the steps of: moving a cantilever or a stage from a first starting point to a first end point at a first position of a sample to press a probe against the sample, and acquiring a force curve at the first position; determining the maximum push-in amount δmax at the first position on the basis of information included in the force curve at the first position; determining a second end point by using a set push-in amount δset and the maximum push-in amount δmax at the first position; and moving the cantilever or the stage from a second starting point to the second end point at a second position of the sample to press the probe against the sample and acquiring a force curve at the second position.SELECTED DRAWING: Figure 2

A technique for improving the accuracy of a sample elastic modulus calculation is provided. A control section of a scanning probe microscope having a displacement detector for detecting probe displacement generates a first force curve that is a measurement result of the probe displacement accompanying a change in the distance between the probe and the sample, using the detection output of the displacement detector with respect to the sample. Furthermore, the control section generates a second force curve by excluding a region shorter than the distance of an inflection point in the first force curve from the first force curve. Then, the control section calculates the elastic modulus of the sample based on the second force curve and a theoretical formula.

A method for operating a pressing device, in particular an electrohydraulic or electromechanical pressing device for pressing a workpiece, comprising a drive unit for generating a pressing force, wherein the method comprises the following steps: detecting a pressure curve and / or a force curve of the pressing device; determining a complete pressing of the workpiece on the basis of the pressure curve and / or the force curve; and switching off the drive unit when a complete pressing is determined.

To provide a technique for improving the accuracy of calculating the elastic modulus of a sample. [Solution] The control unit of a scanning probe microscope, which has a displacement detector for detecting the displacement of the probe, generates a first force curve, which is the measurement result of the probe's displacement due to a change in the distance between the probe and the sample, using the detection output of the displacement detector for the sample. The control unit also generates a second force curve by excluding the region in the first force curve where the distance from the inflection point is shorter than the region in the first force curve. The control unit then calculates the elastic modulus of the sample based on the second force curve and a theoretical formula.