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In this tutorial, we build a modelling, simulation and analysis workflow for unstrained 3D gridshell structures using Blender and OpenSeesPy. Read a detailed breakdown of the project and download the complete Jupyter Notebook and Blender file over on EngineeringSkills.com 🔗 https://www.engineeringskills.com/pos... This is the second part of our gridshell analysis series; in it, we'll build a workflow that allows us to digitally re-create the classic hanging chain form finding models used to identify the optimal shapes of gridshell structures. We'll use Blender for 3D modelling and form finding simulation and OpenSeesPy to evaluate the stresses developed within the form-found structure. After completing this tutorial, you'll have a good understanding of how to build a modelling, simulation and analysis workflow for unstrained 3D gridshell structures. Timestamps 00:00 Intro 00:48 Form finding in Blender 07:18 Exporting data from Blender 11:39 Notebook setup and data import 18:33 Plotting the structure 20:41 Building the OpenSeesPy model 30:40 Plotting the model with OpsVis 33:27 Loading due to self-weight 36:50 OpenSeesPy analysis & results 37:24 Deflected shape 39:44 Reaction forces 40:28 Plotting axial force distribution 45:15 Plotting bending moments 48:34 Optimising gridshell geometry 58:05 What next?