MSC Nastran Thermal
Overview
1.1 Introduction
1.2 Using this Guide
1.3 Thermal Material Properties
1.4 Thermal Loads and Boundary Conditions
1.5 Thermal Analysis
Steady-State Analysis
Transient Analysis
Steady-State and Transient Convergence Criteria
1.6 References
Getting Started - A Guided Exercise
2.1 Introduction
2.2 Objectives
2.3 Start Patran
2.4 Create a Database
2.5 Create a Rectangular Geometric Surface
2.6 Mesh the Surface with Elements
2.7 Modify the Mesh (Reduce the Number of Elements)
2.8 Specify Material Properties
2.9 Assign Element Properties
2.10 Define the Temperature at the Plate’s Bottom Edge
2.11 Apply Heat Flux to the Plate’s Right Edge
2.12 Apply Convection to the Plate’s Left Edge
2.13 Perform a Steady-State Thermal Analysis
2.14 Visualize the Thermal Results (Contour Plot)
Building A Model
3.1 Introduction
3.2 Finite Elements
Nodes
Finite Elements
Multi-Point Constraints
3.3 Coordinate Frames
3.4 Material Library
Materials Form
Constitutive Models
3.5 Finite Element Properties
Element Properties Form
3.6 Loads and Boundary Conditions
Loads and Boundary Conditions Form
3.7 Load Cases
Running a Thermal Analysis
4.1 Introduction
4.2 Review of the Analysis Form
Analysis Form
4.3 Translation Parameters
Numbering Options
4.4 Solution Types
Solution Parameters
4.5 Direct Text Input
4.6 Subcases
Subcase Parameters
Output Requests
Direct Text Input
4.7 Subcase Select
Results Processing and Visualization
5.1 Overview
5.2 Reading Thermal Analysis Results
Read Output2 Form
Attach XDB Form
5.3 Results Visualization Options
Contour Plots
XY Plots
Read Input File
6.1 Review of Read Input File Form
Read Input File Form
Entity Selection Form
Define Offsets Form
Selection of Input File
Summary Data Form
Reject Card Form
6.2 Data Translated from the NASTRAN Input File
6.3 Conflict Resolution
Example Problems
7.1 Overview
7.2 Example 1 - Transient Thermal Analysis
7.3 Example 2 - Free Convection on Printed Circuit Board
7.4 Example 3 - Forced Air Convection on Printed Circuit Board
7.5 Example 4 - Thermal Contact Resistance
7.6 Example 5 - Typical Avionics Flow
7.7 Example 6 - Radiation Enclosures
7.8 Example 7 - Axisymmetric Flow in a Pipe
7.9 Example 8 - Directional Heat Loads
7.10 Example 9 - Thermal Stress Analysis from Directional Heat Loads
7.11 Example 10 - Thermal Stress Analysis of a Bi-Metallic Plate
Files
1.1 Files
Error Messages
2.1 Error Messages
Supported Commands
3.1 File Management Statements
3.2 Executive Control Statements
3.3 Case Control Commands
3.4 Bulk Data Entries
MSC Nastran Thermal
Bulk Data Entries
introduction
finite_elements
nodes
elements
coordinate_frames
material_library
materials_form
element_properties
thermal_conductor
grounded_conductor
thermal_capacitor
grounded_capacitor
beam_general
beam_curved
beam_pipe
beam_tapered
rod
flow_tube
thermal_shell
axisym_solid
thermal_solid
lb_conditions_form
thermal_input_data
temp_thermal
initial_temp
normal_fluxes
dir_fluxes
nodal_source
vol_gen
thermal_ambient
con_flow_tube
thermal_coupled
coupled_flow
coupled_adv
duct_flow
ambient_space
ambient_nodes
radiation_enclosures
load_cases
velocity
HTOC_read_output2
analyze_form
trans_parameters
numbering_options
solution_types
thermal_solution
radiation_parameters
viewfactor_parameters
direct_text
subcase_create
subcase_parameters
output_requests
subcase_direct_text
subcase_select