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The wound-type capacitor has a structure that alternately layers electrode foil and dielectric, featuring a compact design while increasing the surface area of the electrodes. In "PHOTO-VOLTBM," there is no need for air mesh, allowing for the easy creation of complex-shaped models in conjunction with programmatic mesh deformation. In this case study, we will conduct an electric field analysis of the wound-type capacitor. Additionally, we will compare the capacitance obtained from the analysis with the theoretical value. For detailed information on the analysis conditions and results, please refer to the related links below. [Case Overview] ■ Analysis Module: PHOTO-VOLTBM *For more details, please refer to the related links or feel free to contact us.

There is a capacitive proximity switch that can detect both metal and non-metal objects without contact. This sensor detects objects by converting changes in capacitance into electrical signals. In this case study, we will analyze the capacitance between a grounded detection object (metal) and the electrodes within the sensor. We will also observe the changes in capacitance when the relative position of the electrodes is altered from the perspective of the detection object. 【Case Overview】 ■Software Used: PHOTO-VOLT or VOLTjω ■Analysis Type: 3D Electric Field Analysis *For more details, please refer to the related links or feel free to contact us.

Here is an example of nonlinear electric field analysis of cable joints. The electric field analysis software "PHOTO-VOLT" and "VOLTjω" can be selected from two modes: electric field analysis and current distribution analysis. This case uses current distribution analysis. In the electrical insulation design of joints for DC power cables, it is necessary to consider the nonlinear conductivity characteristics of the insulator. For detailed analysis results, please refer to the related links below. 【Case Overview】 ■ Software Used: PHOTO-VOLT or VOLTjω *For more details, please refer to the related links or feel free to contact us.

Here is an example of electric field analysis for a comb-type electrostatic actuator. Electrostatic actuators generate electrostatic force based on the sign of the charges present on opposing electrodes, so electric field analysis is applied. In "PHOTO-VOLT," it is possible to calculate the potential distribution, electric field distribution, and the electrostatic force acting on the electrodes. Additionally, we consider whether the order of the electrostatic force obtained from the analysis results is reasonable. For more details, please refer to the related links below. 【Case Overview】 ■ Software Used: PHOTO-VOLT ■ Analysis Results ・Electrostatic Force (per unit length): 0.792[N] *For more details, please refer to the related links or feel free to contact us.

When a high voltage is applied to a coil, as in the case of surge voltage, a locally high electric field is generated, leading to discharge and damage to the coil's insulation. In this case, we analyze the electric field generated when a voltage is applied between insulated coil wires (cables). The electric field strength generated per 1[V] of voltage between the coil wires can be multiplied by the magnitude of the actual applied voltage to consider it as the maximum electric field strength. Please feel free to consult us regarding any concerns about electromagnetic field analysis. 【Case Overview】 ■ Software Used: PHOTO-VOLT *For more details, please refer to the related links or feel free to contact us.

In this analysis case, we will introduce a comparison between the calculated values of the capacitance of a cylindrical capacitor and the theoretical solutions. We will analyze three conditions: "Cylindrical Capacitor (Air)", "Cylindrical Capacitor (Dielectric - Radial Two Layers)", and "Cylindrical Capacitor (Dielectric - Circumferential Two Layers)". Since this case involves electrostatic field analysis, it can be analyzed not only in VOLT but also in VOLTjω. For more details, please refer to the related links below. 【Case Overview】 ■ Software Used: PHOTO-VOLT or VOLTjω ■ Analysis Results - Cylindrical Capacitor (Air): 5.039E-11 - Cylindrical Capacitor (Dielectric - Radial Two Layers): 3.681E-10 - Cylindrical Capacitor (Dielectric - Circumferential Two Layers): 3.780E-10 *For more details, please refer to the related links or feel free to contact us.

The analysis of capacitance is shown below with shape data created from planar elements for the outer surfaces of each component. The number of nodes is 1112, and the number of elements is 1064. Since the boundary element method is used, a mesh for air is not required. The analysis calculations were performed using the electric field analysis software PHOTO-VOLTBM. For more details, please download the catalog.

We analyzed the electric field distribution between the anode and cathode when 1V and -1V were applied, respectively, in a vacuum. It is assumed that the potential does not vary with time. The analysis module used is PHOTO-VOLT. Since the electrodes are conductors, the moment the potential is applied, charges move to the surface of the electrodes. Therefore, the potential is set on the electrode surface, and modeling the interior of the electrodes is no longer necessary. (Only the space in the vacuum is modeled.) For more details, please download the catalog.

We will introduce an analysis case that focuses on the boundary conditions used in thermal conduction analysis and compares the theoretical solution with simulation results. The thermal conduction analysis software "PHOTO-THERMO" can be used not only for coupled analysis using heat generation density obtained from electromagnetic field analysis but also as a standalone tool. In this case, we used a circular pipe model as shown in the left figure. We conducted thermal conduction analysis under three conditions: "constant temperature boundary condition," "heat generation density," and "heat transfer boundary condition." Since theoretical solutions can be obtained for all of these, you can evaluate the validity of the program by comparing the analysis results. 【Case Overview】 ■ Conditions for Thermal Conduction Analysis - Constant temperature boundary condition - Heat generation density - Heat transfer boundary condition *For more details, please refer to the related links or feel free to contact us.

The number of nodes for the stress analysis of the elastic body is 2271, and the number of elements is 1400. For more details, please download the catalog.

A piezoelectric material is a dielectric that converts mechanical energy into electrical energy, or vice versa. In this case, force is applied to the upper surface of a cylindrical piezoelectric material, and the resulting voltage is analyzed. Since the equations related to "force" and "electricity" are different, these equations are coupled to analyze the piezoelectric element. Therefore, a coupled analysis of stress and electric field was conducted. The software used for stress analysis and electric field analysis is PHOTO-ELAS and PHOTO-VOLT, respectively. 【Case Overview】 ■ Software Used: PHOTO-ELAS and PHOTO-VOLT ■ Analysis Conditions - Relative Permittivity: 2000 - Young's Modulus: 5×10^10 - Poisson's Ratio: 0.35 - Analysis Modules: VOLT & ELAS *For more details, please refer to the related links or feel free to contact us.

Copiers and printers utilize electrophotographic technology. In the electrophotographic process, the steps of "charging," "exposure," "development," "transfer," and "fixing" are followed, leading to paper output. Fixing is the process of solidifying the toner on the paper using heat and pressure. In fixing, energy efficiency and reduced warm-up time are required, and IH technology is used as a heating method. In this case, the heat generation density distribution obtained through magnetic field analysis is used in thermal conduction analysis to analyze the temperature distribution of the roller. The positions of the magnetic core and coil are fixed, and the analysis takes into account the rotation of the roller. For more details, please refer to the related links below. 【Case Overview】 ■ Analysis Type: 3D Analysis ■ Analysis Module: PHOTO - EDDYjω & THERMO *For more details, please refer to the related links or feel free to contact us.

Using the heat generation density obtained from magnetic field analysis, thermal conduction analysis will be conducted, resulting in a temperature distribution. This is an example of magnetic field-thermal coupled analysis using temperature-dependent electrical conductivity. The heated object is a metal filled in a crucible. An alternating current flows through the coil, and the metal is heated by the eddy currents flowing through it. In induction heating analysis, the temperature distribution varies depending on the elapsed time and the location of the analysis target. When the electrical conductivity has temperature-dependent characteristics, the distribution of electrical conductivity changes by location, necessitating a close coupled analysis of the magnetic field and heat. [Case Overview] ■ Analysis Type: Axisymmetric Analysis ■ Analysis Module: PHOTO - EDDYjω & THERMO ■ Coil: Current Density Vector ■ Frequency: 3 [kHz] ■ Conductor: Temperature Dependence of Electrical Conductivity *For more details, please refer to the related links or feel free to contact us.

This is an example of heating the entire cylindrical conductor by moving it and using induction heating. By passing through the center of a coil connected to an AC power source, eddy currents flow on the surface of the conductor, generating heat. The temperature rises from the surface, and heat is conducted internally. Due to the axisymmetric shape of this model, it can be analyzed using 2D axisymmetric analysis. Therefore, plate elements are used. To understand the heat generation distribution and temperature distribution inside the cylindrical conductor, a magnetic-thermal coupled analysis using the finite element method is effective. [Case Overview] ■ Analysis Module: PHOTO - EDDYjω & THERMO *For more details, please refer to the related links or feel free to contact us.

The analysis of induction heating of a steel plate (coupled analysis of magnetic field and heat) determines the distribution of heat generation due to eddy currents flowing in the steel plate created by a three-phase current magnetic field. Next, thermal conduction is analyzed based on the calculated heat generation. For more details, please download the catalog.

The induction heating of gears for hardening was analyzed for cases where the relative permeability depends on temperature (strong coupling) and where it does not depend on temperature (weak coupling). For more details, please download the catalog.

The analysis of induction heating shows an example of the eddy current and temperature field analysis (induction heating analysis) of a metal tube with a notch when a coil carrying an alternating current of 500 kW at a frequency of 800 kHz surrounds the metal tube. The analysis model is created to include the object of analysis and the surrounding air portion. For more details, please download the catalog.

PTC resin has the property of increasing electrical resistance as the temperature rises (temperature dependence). We conducted an analysis of a heater that utilizes this property. This heater has the characteristic that as the temperature rises, the inherent resistance of the PTC resin increases, limiting the current, so it does not exceed a certain temperature. We will perform a current distribution analysis when a voltage of 100[V] is applied to the electrode terminals of the heater. For more details, please download the catalog.

In the PHOTO series, you can set the current density for models such as coils and perform coupled analysis with finite element models (such as magnetic materials) that are influenced by it, using it as an external field model.

The electromagnetic field analysis software "PHOTO-Series" is a simulation tool that can visualize magnetic field distributions and eddy current density distributions. It also analyzes the eddy current deep flaw detection method, which is one of the non-destructive testing methods for detecting the presence of defects. 【Features】 ● Each product is low-cost, allowing for the construction of systems composed of numerous modules, including coupled problems of electromagnetic field analysis, heat conduction, stress, and fluid analysis, at a low price. ● Each product is integrated with dedicated pre- and post-processing tools, equipped only with the necessary functions for electromagnetic field analysis, making it easy for beginners to operate smoothly. ● Academic pricing is available for use in educational institutions (half the regular price). ◆ If you are interested, please contact us via the 'Inquiry Form'.