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Patent Agency Ranking
公开(公告)号：US12000141B2
公开(公告)日：2024-06-04
申请号：US17777862
申请日：2021-06-01
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Fuyou Xu , Weizhi Zhu , Bo Wang , Wenjie Li , Gao Liu
IPC: E04B1/98 , E01D19/00 , F16F15/067
CPC classification number: E04B1/98 , E01D19/00 , F16F15/067
Abstract: The present invention provides a semi-active vibration absorption and energy dissipation control system for restraining vortex-induced vibration of bridges. It has the advantages and characteristics that: (1) springs are horizontally placed at the bottom of a beam, and lengths are not limited, so that the frequency requirement of a low-frequency target can be satisfied; (2) different target frequencies can be realized through different combinations of a plurality of springs connected in series and in parallel, so that multi-order vortex-induced vibration control needs are satisfied; (3) the springs made of fiber reinforced nylon materials are adopted, and are notched, so that a frequency implementation range can be greatly widened; (4) the material and the form of a mass body are not limited, and a water bag can be used, which has low cost and is convenient for disassembly, assembly and mass adjustment.
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2.发明授权公开(公告)号：US10746760B2
公开(公告)日：2020-08-18
申请号：US16339907
申请日：2017-11-15
Applicant: Dalian University of Technology
Inventor： Zhenyu Zhang , Junfeng Cui , Bo Wang , Dongming Guo
Abstract: The present invention provides a method for moving and transferring nanowires using tapered hair of diameter in micron range. The nanowires have a diameter of 60-150 nm. The tapered hair has a diameter of 1-100 μm, a tip curvature radius of 0.8-3 μm and a length of 4-10 mm. A plastic film on a copper grid used for a TEM is removed, the copper grid is reserved, and holes have a diameter of 50-100 μm. The copper grid after ultrasonic cleaning gains the nanowires from the acetone liquid with ultrasonic dispersed nanowires. The copper grid with distributed nanowires and the tapered hair are respectively placed on mobile platforms of two different optical microscopes. Millimeter movement and micron movement of the tapered hair are realized, thereby realizing movement and transfer operation for the nanowires. The tip of the tapered hair is dipped in a small drop of conductive silver epoxy, and the conductive silver epoxy is respectively dropped on both ends of the nanowires; and the radius of the dropped conductive silver epoxy is 4-8 μm. The present invention realizes a method for moving and transferring nanowires using tapered hair through the mobile platforms of the two optical microscopes.
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公开(公告)号：US11878821B2
公开(公告)日：2024-01-23
申请号：US18155356
申请日：2023-01-17
Applicant: Dalian University of Technology
Abstract: A vibration isolation/damping satellite mount of a chopped carbon fiber reinforced thermoplastic composite material mainly includes two parts, and the two parts are connected through bolts. Considering the limitation of the molding process, the mount configuration is further optimized, and the mount structure is prepared by using the injection molding process. Furthermore, the vibration isolation/damping satellite mount of the chopped carbon fiber reinforced thermoplastic composite material prepared in the present invention can be used for large loads and complex working conditions, and the connectivity, overall strength stability, vibration isolation performance and service life of the mount all meet the design requirements. The present invention provides an efficient optimization design and manufacturing method for engineering manufacturing of thermoplastic composite materials, and vibration isolation/damping satellite mount manufactured by the method is low in cost, high in practicability and easy to produce on a large scale.
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公开(公告)号：US09645054B2
公开(公告)日：2017-05-09
申请号：US14781941
申请日：2014-02-12
Applicant: Dalian University of Technology
Inventor： Bo Wang , Peng Hao , Gang Li , Kuo Tian , Zeng Meng , Kaifan Du , Yan Zhou , Xi Zhang , Xiaohan Tang , Bin Wang , Hongzhi Luo
CPC classification number: G01M99/007 , B64C1/068 , G06F17/5018 , G06F2217/16 , G06F2217/46
Abstract: A method for determining a reduction factor of a bearing capacity of an axial load cylindrical shell structure is described. In the method, a depression defect is introduced in a manner of applying a radial disturbance load. Then, an influence rule of a depression defect amplitude of a single point to an axial load bearing capacity is analyzed by using numerical values; then, defect sensitivity analysis is performed on depression defects of multiple points; then, experiment design sampling is performed by using load amplitude values and load position distribution as design variables; and finally, the most disadvantageous disturbance load of the multiple points that limits the defect amplitude is searched for, and a reduction factor of the bearing capacity of the axial load cylindrical shell structure is determined.
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公开(公告)号：US11313774B2
公开(公告)日：2022-04-26
申请号：US16620210
申请日：2018-07-16
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Zhenyu Zhang , Junfeng Cui , Leilei Chen , Bo Wang , Dongming Guo
Abstract: A TEM electromechanical in-situ testing method of one-dimensional materials is provided. A multi-function sample stage which can compress, buckle and bend samples is designed and manufactured. A carbon film on a TEM grid of Cu is eliminated, and the TEM grid of Cu is cut in half through the center of the circle. The samples are dispersed ultrasonically in alcohol and dropped on the edge of the semicircular grid of Cu with a pipette. A single sample is fixed on the edge of a substrate of the sample stage with conductive silver epoxy by using a micromechanical device under an optical microscope, and conductive silver paint is applied to the surface of the substrate of the sample stage; and an electromechanical in-situ testing is conducted in a TEM. This provides a simple and efficient sample preparation and testing method for a TEM electromechanical in-situ observing experiment.
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