Discussion on stress analysis methods for fiberglass reinforced plastic pipes

I’m seeking advice from experts~ Also, does anyone have BS7159 (Chinese version) and UKOOA (available in both Chinese and English)? Please share! !

1. Is it necessary to create a .frp file? 2. For lined composite FRP pipes, is it sufficient to include the lining information when entering the data? There is no need to create a .frp file; the physical performance parameters of the pipeline should be obtained from the manufacturer. The lining of FRP pipes is primarily used to meet the chemical process requirements of the fluids flowing within them or to enhance their electrical conductivity; its impact can be ignored when conducting analyses of the pipe’s strength and flexibility. 3. Where are the typical stress weak points in fiberglass-reinforced plastic pipes with small diameters (1-2“)? For glass fiber pipes with such small diameters, a detailed stress analysis is generally not carried out; a basic check based on the span table is sufficient. 4. Operating condition settings: Why isn’t the EXP operating condition taken into consideration? Is it necessary to define a hydrostatic test condition? If fatigue analysis is to be conducted, the EXP condition needs to be taken into account; the hydrostatic test condition is not mandatory, but it’s better to include it anyway. Glass fiber reinforced plastic pipes are widely used in ocean engineering (due to their light weight and corrosion resistance), while they seem to be less commonly used in the chemical industry at present. Hope this helps.

You can check CAESARII’s documentation; it contains relevant information.

Thank you so much to the expert for the answer! 1. If a .frp file is not created, can we simply use another FRP file from the parameter configuration box and modify the relevant parameters instead, right? What’s the difference between doing this and creating a .frp file? 2. I have reviewed the technical references for CAESAR II as well as the relevant information in the help section, but I feel that the various concepts aren’t connected properly; therefore, I’d like to study the standard system. Thank you again for your reply!

1. If a .frp file is not created, can we simply use another FRP file from the parameter configuration box and modify the relevant parameters instead, right? Yes. What’s the difference between doing this and creating a .frp file? There’s no difference, as glass pipes are used less frequently; therefore, it’s more convenient to enter the values directly. Additionally, the parameters can vary depending on the manufacturer. 2. I read the technical references for CAESAR II as well as the relevant information in the help section, but I felt that the knowledge points weren’t connected, so I want to find some materials on standard systems to study – Baidu!