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WO/1987/005669 |
A circuit (110, 129, 143, 145) for obtaining higher accuracy and total system response for complex mechanical impedance loads, such as earthquake simulators, and in particular to compensate for limitations in controlling the actual valve...
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WO/1987/004242 |
A shaker table (10) includes a table base (12) mounted upon isolating supports (32) and vibrated by vibrators (34, 36). The vibration is conveyed through and damped in a flexure member (16) comprising pairs (26, 28) of honeycomb layers (...
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WO/1987/002601 |
A vibrating element (1) fixedly supported by leaf springs (2, 17 at 3). A drive comprises both separate vibrators (4 and 5) which act upon both extremities (7, 8) of a tumbler lever (6) linked on its turn to the vibrating supporting elem...
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WO/1986/006478 |
A driver bar assembly for coupling together a shaker head (12) and a slip plate (34) carrying a test piece (60) to be vibration tested, the assembly comprising a driver bar (14) having a laterally extended locus of intersection (L-L, P-P...
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WO/1985/003573 |
A load dynamic compensation circuit (70) for a servohydraulic control system for fixtures (10) and specimens (15) being tested operating in various degrees of freedom, for example in an environment to simulate earthquakes to test buildin...
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WO/1985/003547 |
Table couplings for coupling hydraulic actuators (20) to large shaking (22) tables (10), such as earthquake simulator tables are preloaded under gaseous psressure to permit the couplings to be nontension carrying couplings, which in turn...
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WO/1984/001030 |
The dynamic properties of a machine (18) are defined by its kinetic energy, potential energy and dissipation functions. The machine is also identifiable by means of the nonviscous friction therein. These properties form the basis for the...
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WO/1983/003370 |
A torsionally stiff flexure support (30) for the slip plate (16) in a vibration apparatus (10) is provided permitting predetermined linear motion along the axis of vibration by longitudinal bending of the flexure support, but by virtue o...
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WO/1983/003371 |
Two-axis shaker vibration of a slip plate (12) is achieved by use of angularly disposed shakers (18, 20) of novel design, each being provided with an armature (66) cantilevered from the slip plate (12) and free to laterally translate at ...
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WO/1982/003686 |
A technique for evaluating the impact-resisting characteristics of electrical insulation in generators, coils and similar electrical equipment. The magnitude of an impact signal applied to a generator coil is processed as a signal either...
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WO/1982/000715 |
A device for measuring dynamic characteristics of objects during impact comprises, connected in series, a sensor (1) of displacement parameters of the object during the impact, a pulse former (2) and a controllable key (3). To the output...
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JP2011214970 |
To provide a reliable evaluation device for evaluating the earthquake-resistant characteristics of plant equipment and which are applicable to equipment having an arbitrary cross-sectional shape, inside a plant.The evaluation device incl...
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JP2011209150 |
To provide a jig usable for a reproduction method of an abnormal sound capable of reproducing the abnormal sound easily and inexpensively.The jig 100 includes: two rigid body links 102 for installation including respectively a first flan...
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JP2011209149 |
To provide a method of reproducing an abnormal sound, capable of reproducing the abnormal sound easily and inexpensively, and to provide a jig used for the method.The method of reproducing an abnormal sound and the jig are provided, and ...
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JP2011203078 |
To provide a testing apparatus and a testing method for accurately determining the quality, even if a thin plate material member as a concave-convex member has a processed shape, and a concave-convex shaped surface.The inspection apparat...
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JP2011180106 |
To provide a durability testing apparatus, capable of improving the followability of a vibration applying member, while preventing the occurrence of a hunting phenomenon, when vibration is applied to a sample having a moving member moved...
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JP2011179834 |
To provide a measurement method for measuring vibration characteristics of a coupling part between a structure and a vibration testing machine, even when there is no general-purpose vibration testing machine.When a vibration testing mach...
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JP2011169866 |
To solve a problem in conventionally known excitation control technology wherein, since a highly reliable acceleration response cannot be obtained throughout all frequency ranges, it is difficult to determine an accurate transfer functio...
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JP2011163938 |
To provide a road simulator which can be controlled at a high speed with high accuracy, and is compact and space saving.The road simulator 10 includes moving bodies 18 on which a vehicle 12 is placed; actuators for vibrating the moving b...
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JP2011163976 |
To reduce the size and weight of a vehicle collision simulation testing apparatus.A sled 11 is supported in a movable manner in a back-and-forth direction, a yawing sled 14 is arranged on the sled 11 in a horizontally rotatable manner wi...
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JP2011164031 |
To obtain a cross-sectional degree in determining a vibration mode.This method includes the steps of: carrying out a vibration analysis of a tire (step S1); obtaining a degree component of the tire in a circumferential direction from an ...
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JP2011164030 |
To provide a data recording system which, even when each site of measurement moves independently, eliminates the need for complex and enormous wiring work and facilitates association between each sensor and its site of measurement.A data...
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JP2011164100 |
To disclose a thread testing device that simulates a vehicle collision.The testing apparatus simulates a vehicle collision relating to invasion into a cabin of a vehicle, for example, a "small overlap" or "offset" collision. The apparatu...
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JP2011158407 |
To provide a collision testing apparatus capable of easily reproducing a collision, and a collision testing method.This collision testing apparatus related includes a test body 1 mounted with a dummy doll 11 imitating an occupant, a driv...
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JP2011153987 |
To provide an ejection testing apparatus ejecting an axially-asymmetric projectile as maintaining its posture.The ejection testing apparatus 1 comprises an acceleration tube 4 for housing at its rear end in the direction of ejection, a c...
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JP2011153991 |
To perform an accurate vibration test by offsetting vibration coupled to the test vibration in an active vibration isolation device having a function of applying the test vibration to a supporting object.An actuator group is disposed so ...
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JP2011149947 |
To provide a crash testing device and a crash test method for an automobile body capable of performing a crash test while measuring acceleration applied to a vehicle compartment at a collision time.The crash testing device 1 includes: a ...
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JP2011137644 |
To provide a flow force measuring device improving measurement precision of flow force.The flow force measuring device 1 for measuring force received from fluid by rocking a fluid measurement unit 5 includes: a shaker 8; an excitation sh...
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JP2011122904 |
To provide a method for quantitatively determining response measurement points, in an experimental modal analysis for measuring the oscillation characteristics of a structure.The method for quantitatively determining response measurement...
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JP2011112487 |
To provide an excitation device capable of loading a sample having a heavy weight, and exciting it up to a high frequency domain.This device is provided with: a table 11 for loading a sample A thereon; air springs 12a, 12b, 12c, 12d capa...
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JP2011095237 |
To obtain a meaningful performance curve on a building incapable of neglecting the effect of a high order mode by effectively separating the effect of disturbance.Accelerations or the like of earthquake movement including disturbance is ...
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JP2011085414 |
To provide a device for vibration tests which generates vibration by supplying vibration acceleration with a vibrating means excited to prescribed power, has a simple constitution, reliably controls vibration, and reduces the power consu...
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JP2011080905 |
To provide a response analysis method of a building on earthquake capable of efficiently and accurately analyzing response on earthquake, using a simple method.The response analysis method of the building on earthquake includes a process...
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JP2011075307 |
To provide an ice ball ejection apparatus which does not dissolve and destroy ice balls and can be manufactured and installed and can easily perform a hailfall test and a hailfall test method using this apparatus.The ice ball ejection ap...
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JP2011069645 |
To provide a collision test device for a body frame of a truck having established a method for performing a bench test of only a body frame, without using an actual truck.The collision test device includes: a jig frame for fixing the bod...
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JP2011064583 |
To safely stop a hydraulic vibration system, without having to exert influence on an overall system, even when a plurality of vibration exciting devices are connected by a network and an abnormality occurs for some reason, in one hydraul...
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JP2011053807 |
To analyze collision between an impact absorber and a vehicle by reproducing the collision naturally with high accuracy using a finite element model, without producing drag characteristics, deformation portion, deformation sequence and d...
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JP2011047728 |
To improve efficiency in testing by quickly and easily performing suspension work of an object to be tested when performing a drop test repeatedly and continuously.A drop testing device 1 comprises: a base 3 including a landing surface 2...
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JP2011047927 |
To provide a vibration generation device for calibrating a vibrometer based on an acceleration, capable of calibrating accurately, and suppressing increase of a conformation or a mass.This device includes a movable part 20 capable of mou...
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JP2011038817 |
To provide a frequency variable fatigue testing device using an electrically operated vibration generator targeting a mold material of a ground coil for a superconducting magnetically levitated railroad, and making a fatigue test by appl...
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JP2011033467 |
To provide a safe and efficient vibration test capable of preventing an excitor from being driven by discontinuous command signals so as not to apply harmful impact to a specimen, even when an operator changes optionally an amplitude, a ...
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JP2011027669 |
To eliminate the need for preliminary excitation before each vibration test, even if the weight of an object to be tested changes among the respective tests in vibration tests of the object to be tested in a 1 freedom degree system.A vib...
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JP2011021981 |
To provide an ejection tester keeping excessive pressure from acting on an acceleration tube even where a sabot and a flying object are separated from each other by a sabot stopper, and preventing the sabot from scattering.This ejection ...
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JP2011013192 |
To provide a method of evaluating structural soundness which dispenses with a prior vibration test of the structure to be evaluated, and further which excels in the reliability of the obtained results.The natural frequency f1 (Hz) of a s...
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JP2011007631 |
To provide an excitation device for exciting a member to be excited at high responsiveness and a desired frequency.This excitation device 100 includes an excitation actuator unit 20 for exciting the member to be excited along at least di...
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JP2010286377 |
To provide a technique of obtaining a simulation model with high accuracy.A first coefficient matrix indicating a relationship between the quantity of state and a load when an analysis object is vibrated in a specific axial direction is ...
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JP2010286459 |
To reproduce easily a vibration acceleration of a vehicle body.A member 1 simulating a vehicle body is supported by air springs 5 arranged on the upper surfaces of members 2a, 2b simulating a truck, and the member 1 simulating the vehicl...
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JP2010276425 |
To provide a device for determining operating conditions for acquiring desired operation-related values even if characteristics of a vibration generator are not obtained by experiments previously.A vibration controller 22 controls the dr...
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JP2010276424 |
To provide a device for determining operating conditions for acquiring desired operation-related values even if characteristics of a vibration generator are not obtained by experiments previously.A vibration controller 22 controls the dr...
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JP2010274375 |
To provide a dynamic rigidity measuring device and method of a main shaft in a machine tool, for highly accurately acquiring dynamic rigidity.The dynamic rigidity measuring device 1 of a main shaft 6 in a machine tool 5, has: an unbalanc...
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