Shenzhen University

Huawei Technologies Co., Limited

Tencent Technology (shenzhen) Company Limited

Zte Corporation

Guangdong Meizhi Precision-manufacturing Co., Ltd.

Tencent Technology Company Limited

Tao Zhou

Jianbo Zhu

Heping Xie

Junyan Li

Zhuo Cen

Weiyue Bao

Chengcheng Xie

Liexun Feng

Qian Wang

Mingzhong Gao

Ye Liu

Yu Liu

Jian Ding

Bo Song Chen

Shiwei Zhang

Zhiyi Liao

Jun Yu

Cunbao Li

Tao Suo

Zhongbin Tang

Yulong Li

Kai Zhang

Rui Zhong

Yucao Tao

Jinfeng Meng

Xijun Dong

Boqiang Wang

Han Lian

Chunlei Zheng

Linsheng Liang

Jian Zhao

Jian Shen

Jun Wang

Tao Liu

Yao Wang

Xujun Liu

Zhaozheng Hou

Yong Guo

Xiaofeng Wang

Wenbin Sun

Lei Yuan

Hua Tan

Guangdong Zhu

Weiguo Gong

Jiaxin Sun

Changtai Zhou

Binwen Ma

Furun Zheng

Shijia Ye

Tianqi Zhai

Hanling Yang

Fei Ju

Dianbo Fu

Hengchun Mao

Liqin Fu

Jingchun Pu

Xin Xie

Provided is a fixture applied to sticking a strain gauge on a Hopkinson square bar and a use method of the fixture. The invention is specially designed for a square waveguide bar, and the fixture further ensures consistency of the same group of strain gauges along a cross-section position of the bar. The fixture has important practical value in application in a dynamic true triaxial electromagnetic Hopkinson bar test, especially in a high-end material testing field requiring high-precision and high-reliability test data.

Fixture applied to sticking strain gauge on Hopkinson square bar and use method thereof

Provided are an energy absorbing and buffering device applied to a dynamic true triaxial electromagnetic Hopkinson bar and a testing and using method thereof. The device comprises an energy absorbing and buffering ring, an exhaust pipe and an inert gas storage bin. According to the testing and using method, the energy absorbing and buffering device is utilized and connected with a waveguide bar through a middle hollow structure; and a rear end of the energy absorbing and buffering ring is tightly attached to a baffle at a confining pressure loading end. The energy absorbing and buffering device provides energy absorbing and buffering for the waveguide bar, which prolongs a service life of the waveguide bar under an impact load.

Energy absorbing and buffering device applied to dynamic true triaxial electromagnetic Hopkinson bar and method

Provided is a dynamic true triaxial electromagnetic Hopkinson bar leveling and centering system and method. The system comprises a supporting base, a micrometer adjusting knob, a sliding platform, an auxiliary supporting plate, a fixing groove, at least two auxiliary centering targets and a lamp source. According to the auxiliary centering system, a principle that light rays are straight lines and two points form one line is adopted, and adjacent perpendicularity and coaxial centering leveling of a bar piece are determined by respectively adjusting a center of a loading end surface of the bar piece and an upper surface of the bar piece.

Dynamic true triaxial electromagnetic Hopkinson bar leveling and centering system and method

Provided is a stress blank angle eliminating device and method for a dynamic true triaxial electromagnetic Hopkinson bar. Objectives of eliminating influence of a stress blank angle in a sample in a test and preventing permanent deformation caused by mutual collision between the Hopkinson bars are achieved. The adjustable test device for eliminating the stress blank angle eliminates influence of the stress blank angle generated by the sample in a triaxial six-direction dynamic impact test process, and is convenient for obtaining real dynamic failure parameters of the sample.

Stress blank angle eliminating device and method for dynamic true triaxial electromagnetic Hopkinson bar

Disclosed are a dynamic disturbance-induced rock burst test device and a test method. The test device comprise a supporting platform, a plurality of loading plates, an electromagnetic pulse emitting system, an acoustic emission monitoring system, a high-speed camera, an electromagnetic radiation detecting system and a confining pressure servo control loading system. The plurality of loading plates are arranged on a side wall of a coal rock sample and are placed inside a square chest, the electromagnetic pulse emitting system and the confining pressure servo control loading system are arranged inside a bar system, and an acoustic emission probe is arranged inside the loading plate. A three-dimensional real stress environment of the coal rock is simulated by simulating a shear stress through friction between the loading plate and the sample, as well as dynamic and static combined loading of multi-axial and multi-directional static confining pressure and stress wave disturbance.

Dynamic disturbance-induced rock burst test device and test method

A compressor liquid accumulator and a compressor are provided. The compressor liquid accumulator has a first suction cup and a second suction cup. The surface of the first suction cup, which faces the second suction cup, is provided with a first welding surface. The facing of the second suction cup, which faces the first suction cup, is provided with a second welding surface. The first welding surface and the second welding surface are connected in a welded manner. The first suction cup and the second suction cup define a cavity. The first suction cup is provided with a first extending portion is adjacent to the first welding surface. The first extending portion is located in a part of the cavity defined by the second suction cup.

Compressor liquid accumulator and compressor comprising same

The present disclosure provides a dynamic true triaxial electromagnetic Hopkinson bar system, including a central cubic box, a horizontal cruciform support platform, and a central support platform, wherein the central cubic box is disposed in the center of the upper surface of the central support platform; the central cubic box and the horizontal cruciform support platform form an orthogonal coordinate system for precisely positioning and centering the dynamic true triaxial electromagnetic Hopkinson bar system; the confining-pressure loading systems, electromagnetic pulse generators, circular bulges, square bars, and self-lubricating square bar fixation and support frames in the directions X, Y, and Z are respectively symmetrically arranged by taking the central cubic box as a symmetric center; and the systems in the directions X, Y, and Z together construct the dynamic true triaxial electromagnetic Hopkinson bar system.

Dynamic true triaxial electromagnetic Hopkinson bar system

The present disclosure provides a thermal-stress-pore pressure coupled electromagnetic loading triaxial Hopkinson bar system and test method, the system mainly consists of an electromagnetic pulse generation system, a servo-controlled axial pressure loading system, a servo-controlled confining pressure loading system, a thermal control system, a pore pressure loading system, a bar system, and a data monitoring and acquisition system. Based on the conventional Hopkinson bar, the present disclosure creatively introduces a real-time loading and control system for confining pressure, thermal, and pore pressure, aiming to solve the technical problem that the existing test apparatus cannot be used to study dynamic response of deep rock mass under the coupling effect of thermal-stress-pore pressure and dynamic disturbance during dynamic impact loading.

Thermal-stress-pore pressure coupled electromagnetic loading triaxial Hopkinson bar system and test method

A uniaxial bidirectional synchronous control electromagnetic loaded dynamic shear test system and method, a test apparatus thereof including a support platform, a loading bar system, an electromagnetic pulse generation system, a servo-controlled normal pressure loading system, and a data monitoring and acquisition system. The test apparatus can be used to conduct a dynamic shear test research on a rock-like material under a constant normal pressure close to an actual operating condition, and can also be applied to carry out dynamic shear tests on intact rock-like test specimens in various sizes or jointed rock-like test specimens containing a single structural surface to study dynamic shear mechanical property and shear failure behavior under strain rate of 10−10s, thereby providing an important theoretical and technical support for the design, construction, protection, and safety and stability evaluation of geotechnical engineering, structural engineering.

Uniaxial bidirectional synchronous control electromagnetic loaded dynamic shear test system and method

The present disclosure provides a dynamic true triaxial electromagnetic Hopkinson bar system and testing method, the method including: firstly, before applying a static prestress and an impact load, recording and storing complete ultrasonic signals in the directions X, Y, and Z without application of the static prestress and the impact load; secondly, applying the static prestress; thirdly, recording and storing complete ultrasonic signals in the directions X, Y, and Z under the static prestress; fourthly, applying the impact load, and utilizing an triaxial and six-directional synchronous-coordinated-control electromagnetic loading system to apply a dynamic impact load to a test specimen; and fifthly, after completing the dynamic impact loading test, recording and storing once again complete ultrasonic signals in the directions X, Y, and Z without releasing the static prestress after application of the static prestress and the dynamic impact load.

Dynamic true triaxial electromagnetic Hopkinson bar system and testing method

Embodiments provide a base station, including an antenna unit and a radio frequency unit. A port corresponding to a receive channel that is of the radio frequency unit and in a working state and a port corresponding to a transmit channel that is of the radio frequency unit and in the working state are separately connected to ports corresponding to different dual-polarized dipoles or different single-polarized dipoles in the antenna unit. The different dual-polarized dipoles or the different single-polarized dipoles in the antenna unit are mutually isolated.

Base station

A method includes initiating, by an electronic device, a first request to a server, receiving, by the electronic device, a packet that is generated by the server based on the first request and that is returned by the server, where the packet includes an entity data part corresponding to the first request. The method further includes, when it is determined that the entity data part of the packet is a download resource, writing, by the electronic device, the download resource into a first storage area of the electronic device. The method further includes notifying, by the electronic device, a download manager in the electronic device. The method further includes reading, by the download manager, the download resource from the first storage area, and storing the download resource into a second storage area of the electronic device.

Resource download method, electronic device, and apparatus

It is described a location based interactive method, user terminal, server, system and computer storage medium, which relate to the field of computers. The method includes: it is send a geographic coordinate of a user's location to a location server; it is received from the location server and displayed a POI list containing at least one POI corresponding to the geographic coordinate; it is acquired a group creating instruction, and a group creating request is sent to a login server based on the group creating instruction; and interaction is performed with the login server based on a group to provide the user with an intra-group interactive service, where the group is created by the login server based on the POI carried in the group creating request. According to the method, the group is created based on the POI corresponding to the geographic coordinate, and the interactive service is provided to the user based on the group, and thereby extending the interactive mode and range of the location based service, and achieving better sharing of information between users.

Interactive method, user terminal, server and system, computer storage medium

A resource download method, an electronic device, and an apparatus, where the resource download method includes initiating a first request to a server, receiving a packet generated by the server based on the first request and returned by the server, where the packet includes an entity data part corresponding to the first request, writing a download resource into a first storage area of the electronic device when the entity data part of the packet is the download resource, reading the download resource from the first storage area, and storing the download resource into a second storage area of the electronic device.

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Shenzhen, China

Tao Zhou