机构

• 力学研究所 [1]
• 物理研究所 [1]
• 长春光学精密机械与物... [1]
• 数学与系统科学研究院 [1]

采集方式

• OAI收割 [4]

内容类型

• 期刊论文 [3]
• 会议论文 [1]

发表日期

• 2024 [1]
• 2019 [1]
• 2011 [1]
• 2007 [1]

学科主题

筛选

浏览/检索结果: 共4条，第1-4条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Determining plastic slips in rate-independent crystal plasticity models through machine learning algorithms 期刊论文  OAI收割 EXTREME MECHANICS LETTERS, 2024, 卷号: 71, 页码: 13 作者:  Wang ZW(王志文);  Chen XJ(陈贤佳);  Wen JC(温济慈);  Wei YJ(魏宇杰)   |  收藏  |  浏览/下载：11/0  |  提交时间：2024/09/09 Machine learning  Crystal plasticity  Slip system  Taylor criterion  Maximum dissipation  Finite element method   ON ENERGY DISSIPATION THEORY AND NUMERICAL STABILITY FOR TIME-FRACTIONAL PHASE-FIELD EQUATIONS 期刊论文  OAI收割 SIAM JOURNAL ON SCIENTIFIC COMPUTING, 2019, 卷号: 41, 期号: 6, 页码: A3757-A3778 作者:  Tang, Tao;  Yu, Haijun;  Zhou, Tao   |  收藏  |  浏览/下载：24/0  |  提交时间：2020/09/23 time-fractional phase-field equations  Allen-Cahn equation  Cahn-Hilliard equation  MBE model  energy dissipation law  maximum principle   Comparative studies of constitutive properties of nanocrystalline and bulk iron during compressive deformation 期刊论文  OAI收割 ACTA MATERIALIA, 2011, 卷号: 59, 期号: 9, 页码: 3384 Yu, XH; Zhang, JZ; Wang, LP; Ding, ZJ; Jin, CQ; Zhao, YS 收藏  |  浏览/下载：58/0  |  提交时间：2013/09/17 PLASTIC-DEFORMATION  SEMICONDUCTOR NANOCRYSTALS  DISLOCATION NUCLEATION  MAXIMUM STRENGTH  GRAIN-SIZE  COPPER  DIFFRACTION  DISSIPATION  ENERGY  NICKEL   High power VCSEL device with periodic gain active region (EI CONFERENCE) 会议论文  OAI收割 Optoelectronic Materials and Devices II, November 2, 2007 - November 5, 2007, Wuhan, China 作者:  Zhang Y.;  Liu Y.;  Liu Y.;  Liu Y.;  Qin L. 收藏  |  浏览/下载：31/0  |  提交时间：2013/03/25 High power vertical cavity surface emitting lasers with large aperture have been fabricated through improving passivation  lateral oxidation and heat dissipation techniques. Different from conventional three quantum well structure  a periodic gain active region with nine quantum wells was incorporated into the VCSEL structure  with which high efficiency and high power operation were expected. The nine quantum wells were divided into three groups with each of them located at the antinodes of the cavity to enhance the coupling between the optical field and the gain region. Large aperture and bottom-emitting configuration was used to improve the beam quality and the heat dissipation. A maximum output power of 1.4W was demonstrated at CW operation for a 400m-diameter device. The lasing wavelength shifted to 995.5nm with a FWHM of 2nm at a current of 4.8A due to the internal heating and the absence of active water cooling. A ring-shape farfield pattern was induced by the non-homogeneous lateral current distribution in large diameter device. The light intensity at the center of the ring increased with increasing current. A symmetric round light spot at the center and single transverse mode operation with a divergence angle of 16 were observed with current beyond 4.8A.