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Quickstart guide 1 Quickstart Guide Composite Compressive Strength Modeller A Windows based composite design tool for engineers Version M P F Sutcli ?e X J Xin N A Fleck and P T Curtis Engineering Department Cambridge University Cambridge U K CB PZ CCompo

Quickstart Guide Composite Compressive Strength Modeller A Windows based composite design tool for engineers Version M P F Sutcli ?e X J Xin N A Fleck and P T Curtis Engineering Department Cambridge University Cambridge U K CB PZ CComposite Compressive Strength Modeller Quickstart Guide Introduction Welcome to Composite Compressive Strength Modeller CCSM ?? a design tool for deformation analysis and failure prediction of composite materials This quickstart guide gives an introductory guide to CCSM It is intended to be followed at a computer running CCSM and details commands and data to type in A more complete manual is also available CCSM Version is a simpli ?ed version of CCSM to allow use of bit Windows operating system Features of CCSM covered in this manual are Classical laminate theory for the prediction of laminate elastic properties Stress and strain analysis when in-plane forces and bending moments are applied Unnotched failure prediction by conventional failure criteria The program is a tool to predict laminate failure once the loads on a section of the laminate are known For simple geometries it may be clear what the loading is while for more complicated geometries the program may be used as part of a larger calculation to check for failure at critical points in the structure Nomenclature and sign conventions follow the CUED course C Designing with Composites and are described in detail on the C Data Sheet Acknowledgements The authors are grateful for helpful advice from Dr C Soutis and Mr I Turner Ms V Hawyes and P Schwarzel additional programming from Mr A Curtis and for ?nancial support from the Procurement Executive of the Ministry of Defence contract and from the US O ?ce of Naval Research grant - -J- Disclaimer Although the calculations and implementation in this program are believed to be reliable the authors cannot guarantee the accuracy of the results produced by this program and shall not be responsible for errors omissions or damages arising out of use of this program C How to use CCSM CCSM is written in Visual Basic VB a package designed to produce especially userfriendly graphical interfaces The user should work through the various forms in CCSM by following the logic of a problem For example in order to calculate the sti ?ness of the laminate su ?cient information about each lamina should be provided ?rst Similarly analysis of stress and strain would be meaningless without previously calculating the laminate properties and specifying the applied loads CCSM contains a number of forms for each stage of the analysis Details at each stage are ?lled in using text boxes containing data option buttons and command buttons The following ow chart shows what to do in CCSM In each form in CCSM corresponding to each box in the ow chart there is an information box providing information about what to do next Boxes in which to input data have a white background Further help can be obtained from the buttons and from the manual Details of