OriginLab produces professional data analysis and graphing software for scientists and engineers. Our products are designed to be easy-to-use, yet have the power and versatility to provide for the most demanding user. Origin is an easy-to-use software application that provides powerful data analysis and publication-quality graphing capabilities tailored to the needs of scientists and engineers. Origin offers unique peak-analysis and curve-fitting capabilities, over 60 customizable graph types, and analysis templates, all within a tightly integrated workbook environment.
Peak Fitting
The Peak Analyzer tool in OriginPro provides the additional capability of finding and fitting multiple peaks in your spectra. Baseline anchor points can be customized and fit with a suitable fitting function, and the baseline fitting can be included as part of the final peak fitting process. A detailed Fit Control dialog is provided to control all aspects of peak fitting including mixed peak functions, peak centers and widths, sharing parameters, and imposing bounds and linear constraints on parameters. Graphical as well as tabular results are generated as part of the final fit report.
Surface Fitting
OriginPro can fit a 3D surface to XYZ data points. The surface and data points can be displayed together, including droplines from the points to the surface.
Statistics
OriginPro expands on the statistical analysis capabilities of Origin by providing additional tools for Descriptive Statistics, Discrete Frequency Counting, Normality Tests, Correlation Analysis, One-way and Two-way Repeated Measures ANOVA, Principal Component Analysis, Hierarchical Cluster and Discriminant Analysis, many Nonparametric Tests such as Friedman ANOVA and Two-Sample Kolmogorov-Smirnov Test and Mann-Whitney Test, Survival Analysis tools including Weibull Fit and Cox Proportional Hazard Model, ROC Curves, and Power and Sample Size Tests.
Signal Processing
Advanced signal processing features in OriginPro include Short-Time FFT (STFT), Hilbert Transform, Coherence, 2D FFT and 2D FFT-based Filtering, 2D Correlation, and Wavelet analysis.
Image Handling
OriginPro offers more ways to handle your image data, including alpha blending, pixel logic, morphological filtering, and interpolated background subtraction.
Analytical Power
With so much analytical power, OriginPro is the software of choice for those who want a single data analysis and graphing solution.
Private Note:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************
I would be very grateful if any of you have this book to share it with the rest of the world.
Does anyone have a copy of the 1954 version of Modern Timber Engineering? It's the only text I know of that has a section on lamella roof structures (resemble honeycombs). Any help would be greatly appreciated.
ABSTRACT
In order to determine the effectiveness of adding viscoelastic dampers to structures on the reduction of their seismic response, a comprehensive analytical and experimental program
was carried out. The experimental program was first conducted on a 2/5-scale five-story steel frame under precisely controlled ambient temperatures and subject to simulated ground motions with peak accelerations ranging from 0.12g to 0.60g. Results show that viscoelastic dampers are very effective in attenuating seismic structural response at all levels of earthquake ground motions, and that their energy dissipation capacity decreases as ambient temperature increases. However, they are effective at all temperatures tested in the research program. A rational seismic design procedure for viscoelastically damped structure is developed based on these results.
Further tests using a full-scale prototype structure confirm that damping in the full-scale structure can be significantly increased by adding relatively small viscoelastic dampers. The damper design procedure developed based on the scaled model can also be applied to the full-scale structure. This full-scale analytical and experimental study provides an important base for applying the extensive data generated from the scaled model testing to the full-scale structures.
------------------------
The protective and intelligent systems program constitutes one of the important areas of research
in the Building Project. Current tasks include the following:
1. Evaluate the performance of full-scale active bracing and active mass dampers already in place in terms of performance, power requirements, maintenance, reliability and cost.
2. Compare passive and active control strategies in. terms of structural type, degree of effectiveness, cost and long-term reliability.
3. Perform fundamental studies of hybrid control.
4. Develop and test hybrid control systems.
NCEER's activities in viscoelastic dampers research for seismic applications began in 1987 with analytical and experimental work carried out at the State University of New York at Buffalo and at the University of California at Berkeley. The ultimate aim is to determine their effectiveness when incorporated into a structure under seismic loads, and to develop a rational design procedure for such structures. This report summarizes results of a comprehensive analytical and experimental program for steel frame structures. The experimental program was first conducted on a 215-scale steel frame in the laboratory, followed by verification tests conducted on a full-scale prototype structure. A rational seismic design procedure for viscoelastically damped steel frame structures is developed based on these results.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************
Sorry, if this inquiry is too simplistic, but I have not been able to figure out how to view Posts for a particluar date.
For example, how do I search to view posts from November 01, 2011?
Thanks for your help.
Mobile equipment for continious handling of bulk materials -
Part 1:
Rules for the design of steel structures
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************
Hi
Please share this document; Introduction for ABAQUS-CFD
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************
This dissertation develops a new multi-criteria decision support framework for conducting multi-hazard design and retrofit of seismic- and wind-excited structures with passive energy dissipation PED) devices. In addition to designing in compliance with the relevant codes of practice, it is important to note that the performance of PED devices for reducing the structural responses depends on the type, size, and distribution of dampers. The proposed framework provides a genetic algorithm GA) based methodology to address these optimization issues of structural control systems within the context of nonlinear structures. Steel buckling restrained braces, viscous fluid dampers and solid viscoelastic dampers are all considered as possible design alternatives within this framework. In the proposed algorithm, passively damped structural designs evolve toward configurations that limit damage associated with inter-story drift and absolute peak floor acceleration, while considering essential conflicts in dynamic response demands of the structures under different hazard environments, involving earthquakes and strong windstorms. Optimal design of passively damped structures in such uncertain hazardous environments requires not only choosing the most cost-effective approach from a series of alternatives but also defining project-specific constraints and the risk associated with each decision alternative. Thus, unlike previous work in PED optimization, the proposed framework introduces a newly developed multi-objective genetic algorithm to accelerate the convergence to the robust design solutions and to maximize the overall benefit of the structural control system. Additionally, a probability-based optimization approach is introduced to allow decision makers to achieve a specific performance objective, such as identifying the retrofitting investments that will result in minimum life-cycle cost impact on a building. This new approach uses weighted life-cycle cost as an objective function to permit consideration of risk aversion by accounting for uncertainty related to earthquake frequency, structural vulnerability, cost of structural damage and retrofitting, and mitigation benefits. The proposed optimization framework is applied to several example buildings designed or retrofitted with passive control devices to demonstrate the effectiveness of the optimization approaches. From the illustrative examples, it is positively concluded that the modular framework can be successfully used as a practical decision-making tool for cost-effective optimal multiple hazard design of passively damped structures. Also, it is shown that the probability-based optimization approach results in design or retrofit alternatives that combine well with the performance-based design concept, with usage of more realistic design criteria, such as expected life-cycle cost of meeting prescribed performance level.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************
Investigation of pushover analysis procedures for reliability-based and performance-based seismic design with applications to asymmetric building structures
In 1995, a framework for a reliability-based, performance-based seismic design procedure was proposed by Collins. The basic idea behind the procedure was to develop an equivalent single-degree-of-freedom (SDOF) model of the structure and then to use this model and uniform hazard spectra to predict maximum displacements and drifts in the multi-degree-of-freedom (MDOF) structure. Deterministic design-checking equations based on the equivalent SDOF system were developed,and design factors (analogous to load and resistance factors) were calibrated and used in design-checking equations to account for the uncertainty in the equivalent SDOF model, the seismic environment, and site soil conditions. The parameters of the SDOF model were obtained using information from two-dimensional static pushover analyses of the lateral force resisting systems of the structure.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************
![[Image: screen.png]](http://postgen.civilea.com/icon/screen.png){kind=icon}
![[Image: 47060755962466309194.jpeg]](https://pic.civilea.com/images/47060755962466309194.jpeg)
![[Image: info.png]](http://postgen.civilea.com/icon/info.png){kind=icon}
![[Image: tips.png]](http://postgen.civilea.com/icon/tips.png){kind=icon}
![[Image: homepage.png]](http://postgen.civilea.com/icon/homepage.png){kind=icon}
![[Image: download.png]](http://postgen.civilea.com/icon/download.png){kind=icon}
![[Image: crack.png]](http://postgen.civilea.com/icon/crack.png){kind=icon}
![[Image: 42062874618841796809.jpg]](https://pic.civilea.com/images/42062874618841796809.jpg)
![[Image: 69663116202163871444.jpg]](https://pic.civilea.com/images/69663116202163871444.jpg)
![[Image: password.png]](http://postgen.civilea.com/icon/password.png){kind=icon}
![[Image: 53888906408570920566.png]](https://pic.civilea.com/images/53888906408570920566.png)
![[Image: 87181527374623461171.png]](https://pic.civilea.com/images/87181527374623461171.png)