Determination of composite Lay-Up properties
Determination of composite Lay-Up properties
(OP)
Hi all,
I want to perform fea on composite lay-up using ansys apdl. The frp laminate is consisted of 4 layers of 0.3mm bi-directional frp fabric. The bi-rectional frp is layed-up for different angle at each layer. The arrangement is (0-90-45-135-0-90-45-135). The resin is applied at layer surface. The manufacturer provided properties for single bi-directional frp fabric as been supplied. The mechanical property of the resin also been supplied by manufacturer. How to determined the properties of completed frp laminate ? is it by tensile test ? or possible by using mathematical formulation?.
Thanks
I want to perform fea on composite lay-up using ansys apdl. The frp laminate is consisted of 4 layers of 0.3mm bi-directional frp fabric. The bi-rectional frp is layed-up for different angle at each layer. The arrangement is (0-90-45-135-0-90-45-135). The resin is applied at layer surface. The manufacturer provided properties for single bi-directional frp fabric as been supplied. The mechanical property of the resin also been supplied by manufacturer. How to determined the properties of completed frp laminate ? is it by tensile test ? or possible by using mathematical formulation?.
Thanks





RE: Determination of composite Lay-Up properties
Classical lamination theory is the usual approach for calculations, but is not too accurate for strength (better than nothing, though). It's quite a project to write your own software for CLT (allow a few weeks), but is no great challenge with a good reference, but usually people buy in software or use an FE package (most FE packages have CLT built-in).
If you need accuracy then test is the only way forward (especially for strength, and especially for combinations of loading).
RE: Determination of composite Lay-Up properties
RE: Determination of composite Lay-Up properties
Thanks for replying, sorry it is took very long time to reply, but you suggestions really helping me. For testing, which code related the testing of the ply properties?. I looked into ASTM D3039 guideline, it said the test piece should be in constant rectangular cross section, means that in 0-90 fiber direction (as far as i understand). In my work, after applying adhesive for 4 layers fabrics, the fiber direction is 0-90-45-135-0-90-45-135. Is there any specific code for multi angle ply composite? Thanks
RE: Determination of composite Lay-Up properties
For the fabric, did the manufacturer provide dry fabric properties? or properties of fabric + resin (composite)?
What properties are you looking to obtain? moduli or strength? tensile? compressive? shear? other? Each will require a different test method. See ASTM D4762 for guidance on test method selection.
SW