Abstract: Provided are a residual stress estimation method and a residual stress estimation device capable of estimating residual stress suitable for a structure in which inherent strain occupied mainly by plastic strain occurs. A constraint condition is introduced to a distribution function used in the residual stress estimation method based on an inherent strain method, the constraint condition being that a plastic-worked structure does not undergo volume change before and after working. Residual stress or elastic strain is measured from a T piece collected from the structure, and a parameter of the distribution function is optimized so as to approximate the inherent strain at each measurement point obtained from the measured value of the residual stress or elastic strain. An estimated value of the residual stress in the structure is calculated using the obtained parameter.

Abstract: Provided is a residual stress estimation method and a residual stress estimation device capable of suppressing the number of cut pieces to be collected for measuring inherent strain without deteriorating residual stress estimation accuracy. In a case where it is assumed that the inherent strain is uniformly distributed in one direction in a structure, a user measures residual stress from a cut piece collected in a region in which the inherent strain is uniformly distributed and inputs the measured value to the residual stress estimation device. The residual stress estimation device estimates a two-dimensional inherent strain distribution on an analysis surface perpendicular to the one direction in the structure using the input residual stress measured value, transfers the estimated two-dimensional inherent strain distribution to the one direction, and estimates a three-dimensional inherent strain distribution in the structure.

Abstract: An upper body includes a bearing seat surface that is fixed by a bearing bolt to the upper surface of a swing bearing, a swing frame that includes an intersecting side plate intersecting the bearing seat surface and is fixed to the bearing seat surface, and a force dispersing member. The force dispersing member includes at least one vertical plate extending in the up-down direction. The at least one vertical plate is fixed to a region of the bearing seat surface other than a force dispersion target region.

Abstract: Provided is a residual stress estimation method and a residual stress estimation device which are capable of setting an appropriate analysis range without depending on a user's experience. The residual stress estimation device displays analysis results in which strain generated in a structure is analyzed. A user determines a position and a size of an analysis range based on the analysis results, and inputs the determined position and size of the analysis range and a measured value of residual stress of a cut piece of the structure at a measurement point to the residual stress estimation device. The residual stress estimation device estimates distribution of inherent strain in the analysis range to approximate the inherent strain distribution obtained from the input measured value of the residual stress of the cut piece, thereby estimating the residual stress of the structure based on the inherent strain.

Abstract: Provided is a residual stress estimation method and a residual stress estimation device which are capable of setting an appropriate analysis range without depending on a user's experience. The residual stress estimation device displays analysis results in which strain generated in a structure is analyzed. A user determines a position and a size of an analysis range based on the analysis results, and inputs the determined position and size of the analysis range and a measured value of residual stress of a cut piece of the structure at a measurement point to the residual stress estimation device. The residual stress estimation device estimates distribution of inherent strain in the analysis range to approximate the inherent strain distribution obtained from the input measured value of the residual stress of the cut piece, thereby estimating the residual stress of the structure based on the inherent strain.

Abstract: Provided is a residual stress estimation method and a residual stress estimation device capable of suppressing the number of cut pieces to be collected for measuring inherent strain without deteriorating residual stress estimation accuracy. In a case where it is assumed that the inherent strain is uniformly distributed in one direction in a structure, a user measures residual stress from a cut piece collected in a region in which the inherent strain is uniformly distributed and inputs the measured value to the residual stress estimation device. The residual stress estimation device estimates a two-dimensional inherent strain distribution on an analysis surface perpendicular to the one direction in the structure using the input residual stress measured value, transfers the estimated two-dimensional inherent strain distribution to the one direction, and estimates a three-dimensional inherent strain distribution in the structure.

Abstract: Provided are a residual stress estimation method and a residual stress estimation device capable of estimating residual stress suitable for a structure in which inherent strain occupied mainly by plastic strain occurs. A constraint condition is introduced to a distribution function used in the residual stress estimation method based on an inherent strain method, the constraint condition being that a plastic-worked structure does not undergo volume change before and after working. Residual stress or elastic strain is measured from a T piece collected from the structure, and a parameter of the distribution function is optimized so as to approximate the inherent strain at each measurement point obtained from the measured value of the residual stress or elastic strain. An estimated value of the residual stress in the structure is calculated using the obtained parameter.

Abstract: An upper body includes a bearing seat surface that is fixed by a bearing bolt to the upper surface of a swing bearing, a swing frame that includes an intersecting side plate intersecting the bearing seat surface and is fixed to the bearing seat surface, and a force dispersing member. The force dispersing member includes at least one vertical plate extending in the up-down direction. The at least one vertical plate is fixed to a region of the bearing seat surface other than a force dispersion target region.

Abstract: A method for producing a briquetted solid fuel includes pulverizing a low-rank coal. The pulverized low-rank coal is mixed with a solvent oil to give a slurry. The slurry is heated and dewatered to give a dewatered slurry. The solvent oil is separated from the dewatered slurry to give a cake. The cake is heated to further separate the solvent oil from the cake to thereby give a refined coal in powder form. The refined coal is combined with a property-controlling coal in powder form having, as properties, a loose bulk density of 0.6 kg/L or more and an angle of repose of 40° or less, to give a briquetting feedstock containing the property-controlling coal in an amount of 5 to 70 mass percent based on the total mass of the briquetting feedstock. The briquetting feedstock is briquetted under pressure to give the briquetted solid fuel in briquette form.

Abstract: A method for producing a briquetted solid fuel includes pulverizing a low-rank coal. The pulverized low-rank coal is mixed with a solvent oil to give a slurry. The slurry is heated and dewatered to give a dewatered slurry. The solvent oil is separated from the dewatered slurry to give a cake. The cake is heated to further separate the solvent oil from the cake to thereby give a refined coal in powder form. The refined coal is combined with a property-controlling coal in powder form having, as properties, a loose bulk density of 0.6 kg/L or more and an angle of repose of 40° or less, to give a briquetting feedstock containing the property-controlling coal in an amount of 5 to 70 mass percent based on the total mass of the briquetting feedstock. The briquetting feedstock is briquetted under pressure to give the briquetted solid fuel in briquette form.

Abstract: An apparatus, method and computer program product for analyzing fluidity are provided which enable fineness and coarseness in a particle distribution pattern in an object to be restrained in analysis results and thus, the fluidity analysis to be conducted with high accuracy. The apparatus for analyzing fluidity, using a particle method, determines a velocity of each particle, based on particle information of a position of each particle and a physical state of each particle in the last time step, and determines a position of each particle in the current time step, based on the velocity determined. The apparatus for analyzing fluidity next rearranges, based on distances between particles arranged at the determined positions, each particle in the current time step so that the fineness and coarseness in the particle distribution pattern in a target for analysis is reduced.

Abstract: To obtain velocity, density, pressure, and a position per unit time, acceleration of each particle and a repulsive force applied to each particle from a boundary surface is obtained by an equation of motion discretized by a predetermined kernel function; velocity after unit time is calculated by time integration; a density time differential is calculated by a discretized continuity equation representing a temporal change in the density based on a predetermined kernel function; density after unit time is calculated by time integration on the density time differential by using the velocity after the unit time; smoothing is performed on the density at predetermined intervals; pressure after unit time is calculated by an equation of state with the density after unit time; a position after unit time is calculated; the above calculations are repeated from the initial state to the end of a predetermined time.

Abstract: A bearing assembly for a transmission, which is capable of avoiding an ingress of foreign matter, reducing seal torque and reducing shear resistance between a retainer and balls, includes a recessed portion in an inner face of a pocket of the retainer, in which the surface area of contact with a ball is smaller than the surface area of contact when no recessed portion is provided. A sealing member is a contact seal and material of a tip portion of a sealing lip region is highly wearable material which, when the bearing assembly is rotated, wears to define a non-contact or the like. A grease contains a base oil and a thickening agent and the base oil is a mineral oil alone or a mixed oil of mineral oil and poly-?-olefin oil and has base oil kinetic viscosity not higher than 100 mm2/s at 40° C.

Abstract: A bumper beam having increased bending strength achieved with a minimum increase in the weight of the bumper beam. The bumper beam (1) is mounted to the front of a vehicle, extends along a reference line (W), and is provided with a beam body (2) and a reinforcing plate (3). In at least one cross section perpendicular to the reference line (W), the reinforcing plate (3) extends linearly and the beam body (2) includes a pair of protrusions (2t, 2s) protruding, while surrounding an inner space, from the reinforcing plate (3) in a direction intersecting the reinforcing plate (3). If the Young's modulus and the density of the beam body (2) are Est and ?st, respectively, and the Young's modulus and the density of the reinforcing plate (3) are E2 and ?2, respectively, the expression (Est/?st3)<(E2/?23) is satisfied.

Abstract: A bumper structure which as a whole has a reduced weight and which has sufficient buckling strength. A bumper structure has a box-like outer shape constituted of a front flange (2), a rear flange (3), an upper web (4), and a lower web (5) which consist of a steel material. An intermediate web (6) consisting of a material other than the steel material is disposed between the upper web (4) and the lower web (5). If the Young's modulus of the steel material is E1, the density of the steel material is ?1, the Young's modulus of the material which forms the intermediate web (6) is E2, and the density of the material which forms the intermediate web (6) is ?2, the bumper structure satisfies E1/?13<E2/?23.

Abstract: A bumper beam having increased bending strength achieved with a minimum increase in the weight of the bumper beam. The bumper beam (1) is mounted to the front of a vehicle, extends along a reference line (W), and is provided with a beam body (2) and a reinforcing plate (3). In at least one cross section perpendicular to the reference line (W), the reinforcing plate (3) extends linearly and the beam body (2) includes a pair of protrusions (2t, 2s) protruding, while surrounding an inner space, from the reinforcing plate (3) in a direction intersecting the reinforcing plate (3). If the Young's modulus and the density of the beam body (2) are Est and ?st, respectively, and the Young's modulus and the density of the reinforcing plate (3) are E2 and ?2, respectively, the expression (Est/?st3) <(E2/?23) is satisfied.

Abstract: An automobile component to which an eccentric compressive load is applied becomes lighter without deteriorating performance. Density ?, sheet thickness t, Young's modulus E, and yield stress ?y of a material composing an inner panel 3, and a width B of a flange 3a in the automobile component 1 equipped with an outer panel 2 and the inner panel 3 including the flange 3a projecting to an outer side in the center, satisfy the following formulae (1), (2) and (3). ?×t?15.0(kg/m2)??(1) (B/t)?{square root over (?y/E)}?1.

Abstract: To obtain velocity, density, pressure, and a position per unit time, acceleration of each particle and a repulsive force applied to each particle from a boundary surface is obtained by an equation of motion discretized by a predetermined kernel function; velocity after unit time is calculated by time integration; a density time differential is calculated by a discretized continuity equation representing a temporal change in the density based on a predetermined kernel function; density after unit time is calculated by time integration on the density time differential by using the velocity after the unit time; smoothing is performed on the density at predetermined intervals; pressure after unit time is calculated by an equation of state with the density after unit time; a position after unit time is calculated; the above calculations are repeated from the initial state to the end of a predetermined time.

Abstract: A bearing assembly for a transmission, which is capable of avoiding an ingress of foreign matter, reducing seal torque and reducing shear resistance between a retainer and balls, includes a recessed portion in an inner face of a pocket of the retainer, in which the surface area of contact with a ball is smaller than the surface area of contact when no recessed portion is provided. A sealing member is a contact seal and material of a tip portion of a sealing lip region is highly wearable material which, when the bearing assembly is rotated, wears to define a non-contact or the like. A grease contains a base oil and a thickening agent and the base oil is a mineral oil alone or a mixed oil of mineral oil and poly-?-olefin oil and has base oil kinetic viscosity not higher than 100 mm2/s at 40° C.

Abstract: A bumper structure which as a whole has a reduced weight and which has sufficient buckling strength. A bumper structure has a box-like outer shape constituted of a front flange (2), a rear flange (3), an upper web (4), and a lower web (5) which consist of a steel material. An intermediate web (6) consisting of a material other than the steel material is disposed between the upper web (4) and the lower web (5). If the Young's modulus of the steel material is E1, the density of the steel material is ?1, the Young's modulus of the material which forms the intermediate web (6) is E2, and the density of the material which forms the intermediate web (6) is ?2, the bumper structure satisfies E1/?13<E2/?23.