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ABAQUS-UMAT-plasticity
帮助umat学习者快速入门，并且详细理解umat的内在运行机制(Umat help learners QuickStart, and a detailed understanding of the inner workings of the mechanism umat)
- 2021-04-05 16:49:07下载
- 积分：1
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NURBS110707
高速切削加工技术是一种先进的制造技术，具有强大的生命力和广阔的应
用前景，已成为切削加工的主流。数控插补技术是数控系统实现轨迹运动控制
的基础，插补运算是CNC系统软件实现运动控制的核心模块，插补算法的优劣
将直接影响到CNC系统的性能。因此，实现一种高精度和高速度的插补方法是
插补的关键所在。
本文在分析传统基准脉冲插补、数据采样插补的算法的基础上，着重研究
了三次NURBS曲线实时插补技术，针对部分算法的不完整或效率低，提出了
一种简单快捷的插补算法。采用NURBS曲线的矩阵表达式，将整个插补过程
分解为插补预处理和实时插补。在插补预处理中完成了大量的计算，预处理的
计算结果直接应用于实时插补，使插补算法满足了NURBS曲线插补的实时性
要求，再辅以必要的轮廓误差控制，实现了加工速度自适应于加工路径的
NURBS曲线直接插补。
本文讨论的插补算法采用C++语言实现，并在VC++6.0的编程环境中实现
了插补算法的计算机仿真，验证了算法的正确性和可行性。(The high speed cutting is one of advanced manufacture technique,which has the powerful vitality and the broad application,and already became the mainstream of machining.The interpolation technology of NC is the foundation of path s control in the CNC system,and the interpolation operation is the core module of
CNC system software,which comes the motion control true.The interpolation
algorithm,whose function is good or bad,directly influences the performance of CNC system.So,a kind of interpolation method with the high accuracy and high speed is the key of interpolation.
Based on analyzing the traditional pulse interpolation and data sampling
interpolation,this paper emphasizes on the NURBS curve real-time interpolation
technology.In view of the partial algorithms which is incomplete and the low efficiency,this paper propose a simple and quick interpolation algorithm.Using the
matrix representation of NURBS curve,the whole interpolation process is divided into appropriate pretreat)
- 2011-07-07 11:46:17下载
- 积分：1
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外弹道测量数据处理
外弹道测量数据处理理论书籍pdf，很实用，内容全面对外场试验处理有指导作用(exterior ballistic data processing)
- 2021-03-13 15:09:24下载
- 积分：1
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gps
自适应调零天线GPS抗干扰技术研究简析，介绍了智能天线的gps应用(Adaptive nulling antenna Analysis of GPS anti-jamming technology research, introduced the application of smart antenna gps)
- 2009-04-27 23:13:00下载
- 积分：1
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examples
MATLAB的50个仿真实例，对初学者很好的东西(MATLAB simulation of the 50 examples of a good thing for beginners)
- 2009-11-22 17:18:27下载
- 积分：1
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Nine-Free-Programs-Ebook
this is a book on nine free programs every pc should have.
- 2009-11-09 00:47:41下载
- 积分：1
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endnote_Chinese
说明： Endnote 是你整理文献的帮手，可以让你在众多的文献中，迅速找到你需要的信息(Endnote is to help you organize the literature, can put you at the large number of literature, quickly find the information you need)
- 2008-09-22 20:49:31下载
- 积分：1
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张量分析-黄克智
张量分析-黄克智-清华大学出版社-1986(Tensor analysis - Huang Kezhi Tsinghua University press -1986)
- 2018-11-10 11:25:44下载
- 积分：1
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直流输电(浙江大学发电教研组直流输电科研组)
说明： 该书于2017年2月由机械工业出版社正式出版,凝聚了徐政教授和近20名团队成员多年来的心血.第二版在第一版的基础上,有了较大篇幅的扩充,在系统性和完整性方面得到了加强,符号和术语也得到了进一步规范.该书系统讲述了柔性直流输电的理论和应用.内容包括柔性直流输电系统的特点和应用,(The book was officially published by the Machinery Industry Press in February 2017, and it has gathered the hard work of Professor Xu Zheng and nearly 20 team members for many years. The second edition has a larger expansion on the basis of the first edition. The system and integrity have been strengthened, and the symbols and terminology have been further standardized. The book system describes the theory and application of flexible DC transmission. The content includes the characteristics and applications of flexible DC transmission systems.)
- 2020-05-29 14:28:34下载
- 积分：1
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hackbaseVIP_42
黑客基地VIP会员内部培训资料！
第42讲：零起点培训如何破解软件和制做注册机(Hackers VIP membership base within the training materials! 42 Lecture: Beginners training how to crack the software and making RI)
- 2010-06-29 11:11:12下载
- 积分：1
