Introduction to XML#

  • The content of an XML file is composed of elements. Each element is marked by a pair of tags <tag>...</tag>.

  • The hierarchical structure of elements is important. At the same level of hierarchy, the arrangement order of elements is not important.

  • The tag names are keywords, which should not be changed.

  • Each element can have multiple attributes, which are name="value" pairs. The names are also keywords. The values must be surrounded by double quotes.

XML Schema#

The XML schema for PreVABS input files is available at :download:prevabs.xsd <schemas/prevabs.xsd>. This schema defines the structure and constraints for:

  • Cross-section definition

  • Material properties

  • Component configurations

  • Analysis settings

You can use this schema to validate your input files using any XML validator. For example, using xmllint:

xmllint --schema prevabs.xsd your_input.xml --noout

The schema provides validation for:

  • Required and optional elements

  • Valid element types and attributes

  • Allowed values for enumerations

  • Proper nesting of elements

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