Philip Dai
surface type clinder
Data lines to define surfaces created with TYPE=CYLINDER: First line (leave blank if this surface is being defined within a part or a...
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Philip Dai
UEL for HFW pipes
Uniform Elongation (UEL) For all tensile tests (MPQT & Production tests), in addition to recording / reporting the YS, TS, and YS/TS, the...
Philip Dai
Remote Interview Video Podcast
Based on the following link: (Ref: https://www.vidyard.com/blog/interview-videos/?gdpr-consent=674 ) To record a quality interview,...
Philip Dai
Conversation with Copilot: keep your options open for both STEM and humanities courses at university
Here are some universities known for their strong programs in Maths, Further Maths, Physics, and English Literature: United Kingdom...
Philip Dai
School preferences (Conversation with Copilot)
There could be several reasons why you prefers a school that you perceive as worse compared to a better one. Here are a few...
Philip Dai
Copilot: A-Level Combinations
Combining Maths, Further Maths, and Physics is a strong foundation for many STEM fields. Here are a few complementary subjects you might...
Philip Dai
Catenary calculations
Let a catenary be embedded in a cartesian plane so that the 𝑦-axis passes through the lowest point of the catenary. (The word catenary...
Philip Dai
Nominal bending strain for pipe
Orcaflex: (half the pipe diameter) / (radius of curvature) Abaqus thin pipe: (pipeline MR) / Radius_of_curvature pipeline MR = (half the...
Philip Dai
thin and thick pipe hoop stress due to pressure
In Abaqus, the effective axial section force for beams subjected to pressure loading is defined as: thin pipe theory: Hoop stress S22 =...
Philip Dai
Connector Elasticity to define rotational stiffness
** *Node 1, 0., 19121.25, 0. *Element, type=CONN3D2 1, 1, Beam_CS-1.1 *Connector Section, elset=Wire-1-Set-1,...
Philip Dai
Straightening Process for Reel Lay System and RCM
The straight settings produce a pipe whose OOS is less than 0.15%L typically, ±9mm when L is taken as 6m (i.e., radius of curvature:...
Philip Dai
Nonlinear isotropic/kinematic hardening model
In the most analyses, the plasticity model we used for offshore pipelines, only have the following lines: *material, name=mat *Density...
Philip Dai
PIPE31(H) for offshore pipelines
The pipeline is normally modeled using PIPE31(H) elements. The shear flexible (Timoshenko) pipe elements are good for finite axial...
Philip Dai
Out-Of-Straightness (OOS) for under-straight pipe
Target radius of curvature: R [m] Target curvature: 1/R [1/m] Nominal strain: (OR-t/2)/R (ABAQUS) or OR/R (Orcaflex) Pipe length to...
Philip Dai
Ovality of pipeline
The out-of-roundness (OOR) for pipe ends is determined as the difference between the largest outside diameter and the smallest outside...
Philip Dai
An Abaqus Error with Altair Compute Manager
When submitting jobs with Altair Compute Manager, one mistake I have often made is using a running folder name with space, for instance,...
Philip Dai
Notepad++ define Abaqus language
It is pretty handy editing Abaqus input files with Notepad++. Easy to use "compare" plugin is a bonus. It is also useful to highlight...
Philip Dai
Output Contact & Connector Forces
** Field Output *Contact Output, MASTER = master_surf CFORCE ** History Output *Output, history, FREQUENCY=1 *Element Output,...
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