Abstract: To provide a simulation method in which a zooming analysis method is applied to a particle method to analyze displacement and stress. An analysis model in which an object to be analyzed is divided by a first mesh is analyzed by using a finite element method or a particle method. A partial region of the analysis model is selected as a zooming region, the zooming region is divided by a second mesh, and a particle is disposed at each node of the second mesh. The particle at the node is displaced based on displacement by the analysis using the first mesh. A boundary condition of the zooming region is set based on a particle position at the node after the displacement. The particle is displaced by using the particle method under the boundary condition. Stress acting on the zooming region is obtained based on a particle position after the displacement.

Abstract: An input unit to which shape definition data that defines a three-dimensional shape is input. A processing unit disposes a plurality of particles on an edge and a surface of the three-dimensional shape defined by the input shape definition data, disposes particles according to an internal distribution rule in an inner part spaced apart from the surface of the three-dimensional shape, disposes particles at a position deviated from the position according to the internal distribution rule, in a space between the inner part and the surface of the three-dimensional shape, and generates a tetra mesh having a center of the disposed particles as a vertex.

Abstract: A value of a parameter defining a linear term and a value of a parameter defining a nonlinear term of an interaction potential between particles determined according to a material to be simulated and an initial condition of a particle disposition are input to an input unit. A processing unit analyzes behavior of the particles by a molecular dynamics method using the interaction potential defined by the values of the parameters input to the input unit and based on the initial condition input to the input unit.

Abstract: A coupled simulation of a structural-elastic phenomenon and a heat conduction phenomenon of a simulation target including plural particles is performed. Here, numerical calculation of a motion equation capable of being transformed into an equation of the same form as that of a heat conduction equation is performed with respect to a term of a spatial temperature distribution and a term of a derivative of temperature with respect to time, to perform a simulation of the heat conduction phenomenon of the simulation target.

Abstract: A coupled simulation of a structural-elastic phenomenon and a heat conduction phenomenon of a simulation target including plural particles is performed. Here, numerical calculation of a motion equation capable of being transformed into an equation of the same form as that of a heat conduction equation is performed with respect to a term of a spatial temperature distribution and a term of a derivative of temperature with respect to time, to perform a simulation of the heat conduction phenomenon of the simulation target.

Abstract: An analyzing device analyzes a particle system defined in a virtual system and includes an area determination unit that determines a cross sectional area between two particles included in the particle system independently of positions of other particles, a heat conduction calculation unit that solves a heat conduction equation using the area determined by the area determination unit, a force calculation unit that calculates a force exerted on a particle using a result of calculation by the heat conduction calculation unit, a particle state calculation unit that calculates a state of the particle using the force calculated by the force calculation unit, and a state update unit that updates a state of the particle using a result of calculation by the particle state calculation unit.

Abstract: An analyzing device analyzes a particle system defined in a virtual system by numerically calculating a governing equation that governs motion of particles in the particle system and includes: a temperature calculation unit that calculates a temperature of a particle, which is one of parameters of particles in the particle system; a force calculation unit that calculates a force exerted on the particle assumed to be immersed in a heat bath of the temperature calculated by the temperature calculation unit; and a state update unit that updates a state of the particle based on the force calculated by the force calculation unit.

Abstract: An analysis device includes a unit cell acquisition unit configured to acquire a unit cell under a period boundary condition reflecting symmetry of an object to be analyzed, a unit particle system acquisition unit configured to acquire a unit particle system including a plurality of unit particles in the unit cell acquired by the unit cell acquisition unit, and a numerical computation unit configured to numerically compute a governing equation, which governs the motion of each unit particle of the unit particle system acquired by the unit particle system acquisition unit, under the period boundary condition. The numerical computation unit moves the boundary of the unit cell to simulate the movement of the object to be analyzed during computation.

Abstract: An analysis device includes a defined system acquisition unit configured to acquire a system including a plurality of particles defined in a virtual space as a defined system, a numerical computation unit configured to numerically compute a governing equation, and to update the position of each particle, a particle group specification unit configured to specify a particle group, the relative position relationship of which is substantially maintained before and after the position is updated, a system position adjustment unit configured to, when a system obtained is referred to as an updated system, adjust the relative positions of the defined system and the updated system such that the specified particle group and a particle group in the updated system overlap each other, and a position relationship change unit configured to change the relative position relationship between a particle in the defined system and a particle in the updated system.

Abstract: An analysis device that analyzes an object with a predetermined shape is provided which includes a pre-positioned creation unit that creates a system including a plurality of particles, a region specifying unit that specifies a region with the predetermined shape in the system created by the pre-positioned creation unit as a system describing the object, and a numerical calculation unit that numerically calculates a governing equation governing motions of particles in the system describing the object.

Abstract: An analysis device that analyzes an object with a predetermined shape is provided which includes a pre-positioned creation unit that creates a system including a plurality of particles, a region specifying unit that specifies a region with the predetermined shape in the system created by the pre-positioned creation unit as a system describing the object, and a numerical calculation unit that numerically calculates a governing equation governing motions of particles in the system describing the object.

Abstract: A molecular simulation method that acquires physical properties or physical quantities of a predetermined shape using simulation, including arranging atoms in the predetermined shape, acquiring interatomic potential based on positions of the arranged atoms, and carrying out a molecular dynamics calculation based on the acquired interatomic potential, and acquiring the physical properties or the physical quantities.

Abstract: A molecular simulation method that acquires physical properties or physical quantities of a predetermined shape using simulation, including arranging atoms in the predetermined shape, acquiring interatomic potential based on positions of the arranged atoms, and carrying out a molecular dynamics calculation based on the acquired interatomic potential, and acquiring the physical properties or the physical quantities.

Abstract: A motor operation controller, which can accommodate different power supply voltages by changing a minimum circuit configuration using common motors, wiring, etc., has an insulation structure between input power supply and the motors for providing the capability of bidirectional operation in a power mode and a regeneration mode. The motor operation controller comprises a converter section and an inverter section for supplying power to a motor. In the converter section, there is an insulation type bidirectional DC voltage conversion function provided by an insulation type bidirectional DC voltage conversion section 32 having an insulation type bidirectional DC voltage converter 33, a controller 35, and a smoothing circuit 34.

Abstract: A DC power-supply unit convening AC into DC power is provided to, when AC voltage and/or AC current of an AC power supply passes through a zero point, close a switch after a preset first delay time from a passing through time, and open the switch after a preset second delay time from a passing through time. The unit includes a rectifier switch for convening AC power output from the AC power supply into DC power, an inductive element connected to the rectifying element, a switching element connected to the inductive element, and the rectifying element, a smoothing unit connected in parallel with the switching element, and a switch control unit for controlling the switch according to the predetermined delay times.

Abstract: A wire electrical feeding device for an electrical discharge machine. Vibrator assemblies are utilized to feed the wire electrode through electrode guides of the electrical discharge machine. A first vibrator assembly vibrates through a locus which includes a component in the wire feeding direction. The wire electrode is selectively pressed against the first vibrator assembly when the first vibrator assembly is moving in a direction having a component in a wire feeding direction. In the alternative, a second vibrator assembly, which is coupled to the first, clamps the wire electrode when the first vibrator assembly is moving in a direction having a component in the wire feeding direction. The vibrator assembles may each be driven at different vibrational frequencies.