OpenSees Examples Manual bacup

Introduction

The following examples are listed in order of simplicity.

NOTE: gravity analysis is always included as part of the model building.

<a id="h3619" class="" title="Introductory Example" href="3389.htm" target="_self">Introductory example</a>
		Objectives and Characteristics		Model Types	Analysis Types
<a id="h3606" class="" title="Example 1a. 2D Elastic Cantilever Column" href="3295.htm" target="_self">Example 1a. Elastic Cantilever Column</a>
	<img src="3458.png" alt="Embedded Power-Point Image" height="213.95" width="103.4" vspace="0" hspace="0" align="bottom" border="0">	overview of basic OpenSees input structure coordinates, boundary conditions, element connectivity, nodal masses, nodal loads, etc. two-node, one element		elastic elements	static pushover analysis dynamic earthquake-input analysis
<a id="h3605" class="" title="Example 1b. 2D Elastic Portal Frame" href="3300.htm" target="_self">Example 1b. Elastic Portal Frame</a>
	<img src="3459.png" alt="Embedded Power-Point Image" height="205.7" width="237.6" vspace="0" hspace="0" align="bottom" border="0">	two element types distributed element loads		elastic elements	static pushover analysis dynamic earthquake-input analysis
<a id="h3620" class="" title="Simple Nonlinear-Analysis Example" href="3587.htm" target="_self">Simple Nonlinear Analysis Example</a>
		Objectives and Characteristics		Model Types	Analysis Types
<a id="h3602" class="jumptemplate" title="Example 2a. Elastic Cantilever Column with variables" href="3599.htm" target="_self">Example 2a. Elastic Cantilever Column</a> with variables
	<img src="3895.png" alt="Embedded Power-Point Image" height="171.05" width="160.6" vspace="0" hspace="0" align="bottom" border="0">	introduce variable: define & use		elastic element	static pushover analysis dynamic earthquake-input analysis
<a id="h3603" class="" title="Example 2b. Nonlinear Cantilever Column: Uniaxial Inelastic Section" href="3600.htm" target="_self">Example 2b. Nonlinear Cantilever Column: Uniaxial Inelastic Section</a>
	<img src="3896.png" alt="Embedded Power-Point Image" height="171.05" width="175.45" vspace="0" hspace="0" align="bottom" border="0">	first example of nonlinear model, set nonlinearity at section level		nonlinearBeamColumn element uniaxial section	static pushover analysis dynamic earthquake-input analysis
<a id="h3604" class="" title="Example 2c. Nonlinear Cantilever Column: Inelastic Uniaxial Materials in Fiber Section" href="3601.htm" target="_self">Example 2c. Nonlinear Cantilever Column: Inelastic Uniaxial Materials in Fiber Section</a>
	<img src="3897.png" alt="Embedded Power-Point Image" height="171.05" width="218.9" vspace="0" hspace="0" align="bottom" border="0">	set nonlinearity at material level material stress-strain response is assembled into fiber section reinforced-concrete fiber section		nonlinearBeamColumn element uniaxial material fiber section (Reinforced-concrete fiber section)	static pushover analysis dynamic earthquake-input analysis
<a id="h3621" class="" title="2D Structural Modelling & Analysis Examples" href="3588.htm" target="_self">2D Structural Modelling & Analysis Examples</a>
		Objectives and Characteristics		Model Types	Analysis Types
<a id="h3503" class="" title="Example 3. 2D RC Cantilever" href="3472.htm" target="_self">Example 3. Cantilever Column</a> with units
	<img src="3460.png" alt="Embedded Power-Point Image" height="213.95" width="103.4" vspace="0" hspace="0" align="bottom" border="0">	units, defined and used (they will be used in all subsequent examples) separate model-building and analysis files introduce PDelta effects (or not)		elastic elements inelastic uniaxial section fiber section (Reinforced-concrete fiber section) Linear, PDelta or Corotational Transformation	static pushover analysis dynamic earthquake-input analysis (uniform excitation)
<a id="h3504" class="" title="Example 4. 2D RC Portal Frame" href="3312.htm" target="_self">Example 4. Portal Frame</a>
	<img src="3461.png" alt="Embedded Power-Point Image" height="202.4" width="234.3" vspace="0" hspace="0" align="bottom" border="0">	use previously-defined procedures to simplify input introduce more analysis types introduce procedure to read database input motion files (data with text in first lines)		elastic elements inelastic uniaxial section inelastic fiber section (Reinforced-concrete fiber section)	static pushover analysis static reversed cyclic analysis dynamic sine-wave input analysis (uniform excitation) dynamic earthquake-input analysis (uniform excitation) dynamic sine-wave input analysis (multiple-support excitation) dynamic earthquake-input analysis (multiple-support excitation) dynamic bidirectional earthquake-input analysis (uniform excitation)
<a id="h3505" class="" title="Example 5. 2D Frame – 3-story, 3-bay (RC & W-section)" href="3326.htm" target="_self">Example 5. 2D Frame, 3-story 3-bay</a>, Reinforced-Concrete Section & Steel W-Section
<img src="3462.png" alt="Embedded Power-Point Image" height="234.3" width="380.6" vspace="0" hspace="0" align="bottom" border="0">		2D frame of fixed geometry: 3-story, 3-bay nodes and elements are defined manually, one by one		Reinforced-Concrete Section Steel W-Section elastic uniaxial section inelastic uniaxial section inelastic fiber section	static pushover analysis static reversed cyclic analysis dynamic sine-wave input analysis (uniform excitation) dynamic earthquake-input analysis (uniform excitation) dynamic sine-wave input analysis (multiple-support excitation) dynamic earthquake-input analysis (multiple-support excitation) dynamic bidirectional earthquake-input analysis (uniform excitation)
<a id="h3506" class="" title="Example 6. Generic 2D Frame, N-story, N-bay (RC & W-section)" href="3329.htm" target="_self">Example 6. generic 2D Frame, N-story N-bay</a>, Reinforced-Concrete Section & Steel W-Section
<img src="3502.png" alt="Embedded Power-Point Image" height="260.15" width="435.05" vspace="0" hspace="0" align="bottom" border="0">		2D frame geometry of variable geometry ( # stories and # bays are variables) node and element definition is automated use previously-defined procedures to view model node numbers and elements, deformed shape, and displacement history, in 2D		Reinforced-Concrete Section Steel W-Section elastic uniaxial section inelastic uniaxial section inelastic fiber section	static pushover analysis static reversed cyclic analysis dynamic sine-wave input analysis (uniform excitation) dynamic earthquake-input analysis (uniform excitation) dynamic sine-wave input analysis (multiple-support excitation) dynamic earthquake-input analysis (multiple-support excitation) dynamic bidirectional earthquake-input analysis (uniform excitation)
<a id="h3622" class="" title="3D Structural Modelling & Analysis Examples" href="3589.htm" target="_self">3D Structural Modelling & Analysis Examples</a>
		Objectives and Characteristics		Model Types	Analysis Types
<a id="h3507" class="" title="Example 7. 3D Moment-Resisting Frame (RC & W-section)" href="3330.htm" target="_self">Example 7. 3D Frame, 3-story 3-bayX 3-bayZ</a>, Reinforced-Concrete Section & Steel W-Section
<img src="3779.png" alt="Embedded Power-Point Image" height="372.9" width="298.65" vspace="0" hspace="0" align="bottom" border="0">		3D frame of fixed geometry nodes and elements are manually manually, one by one introduce rigid floor diaphragm use previously-defined procedures to view model node numbers and elements, deformed shape, and displacement history, in 3D		Reinforced-Concrete Section Steel W-Section Elastic or Fiber Section option is a variable within one input file rigid diaphragm	static pushover analysis static reversed cyclic analysis dynamic sine-wave input analysis (uniform excitation) dynamic earthquake-input analysis (uniform excitation) dynamic sine-wave input analysis (multiple-support excitation) dynamic earthquake-input analysis (multiple-support excitation) dynamic bidirectional earthquake-input analysis (uniform excitation)
<a id="h3508" class="" title="Example 8. generic 3D Frame – Nstory, NbayX,NBayZ (RC & W-section)" href="3332.htm" target="_self">Example 8. generic 3D Frame, NStory NBayX NBayZ</a>, Reinforced-Concrete Section & Steel W-Section
<img src="3904.png" alt="Embedded Power-Point Image" height="429" width="391.6" vspace="0" hspace="0" align="bottom" border="0">		3D frame geometry of variable geometry ( # stories and # bays in X and Z are variables) node and element definition is automated introduce user-input interface, the user is given the option as to what to view in model		Reinforced-Concrete Section Steel W-Section Elastic or Fiber Section option is a variable within one input file optional rigid diaphragm rigid diaphragm	static pushover analysis static reversed cyclic analysis dynamic sine-wave input analysis (uniform excitation) dynamic earthquake-input analysis (uniform excitation) dynamic sine-wave input analysis (multiple-support excitation) dynamic earthquake-input analysis (multiple-support excitation) dynamic bidirectional earthquake-input analysis (uniform excitation)
<a id="h3859" class="" title="Section Modelling And Analysis" href="3590.htm" target="_self">Section Modelling And Analysis</a>
<a id="h3585" class="" title="Example 9. Build a Fiber Section" href="3534.htm" target="_self">Example 9. Build & Analyze a Section</a>
<img src="3809.png" alt="Embedded Power-Point Image" height="414.15" width="534.6" vspace="0" hspace="0" align="bottom" border="0">		defined section using uniaxial behavior (define moment-curvature curve) or define section using uniaxial materials (define stress curve) in fiber section		2D & 3D models of sections: Uniaxial Nonlinear section Fiber Steel W-section Fiber RC symmetric rectangular unconfined-concrete section Fiber RC symmetric rectangular unconfined & confined-concrete section Fiber RC generalized rectangular section Fiber RC generalized circular section	2D & 3D static unidirectional moment-curvature analysis

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