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downloads/asterion-fcta-v1.0-public-release/asterion-fcta-v1.0/analysis/ansys/v0_5/model/acceptance_criteria.csv

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+criterion_id,metric,applicable_case,evaluation,target,note
+AC-STR-01,Equivalent stress,All nominal static cases,Maximum stress below yield/1.5,FoS ≥ 1.5,Preliminary portfolio criterion; local joint models may govern
+AC-STR-02,Member Euler screening,All compressive beam members,Pcr/|P|,≥ 2.0,Not a substitute for eigenvalue/nonlinear buckling
+AC-STR-03,Docking axial displacement,LC-STR-01,Maximum forward-interface axial displacement,≤ 5 mm,Supports alignment and capture-system assumptions
+AC-STR-04,Propulsion-mount displacement,LC-STR-02,Maximum propulsion-mount translation,≤ 15 mm,Preliminary gimbal and plume alignment limit
+AC-STR-05,Ring radial displacement,LC-STR-03,Maximum radial ring displacement,≤ 10 mm,Preliminary gap and bearing-clearance criterion
+AC-STR-06,Emergency braking displacement,LC-STR-05,Maximum tangential ring displacement,≤ 25 mm,Current screening result flags likely stiffness redesign
+AC-STR-07,Misaligned docking displacement,LC-STR-07,Maximum forward-interface lateral/total displacement,≤ 25 mm,Current screening result flags likely stiffness redesign
+AC-MOD-01,Rigid-body modes,LC-MOD-01,First six frequencies,< 0.001 Hz,Check mass and constraint integrity
+AC-MOD-02,First supported flexible mode,LC-MOD-02,First non-zero mode,> 0.10 Hz,Provisional; controls and mechanism spectra must later define separation
+AC-BUC-01,Eigenvalue buckling factor,LC-BUC-01,First physical eigenvalue multiplier,≥ 2.0,Then perform imperfection-sensitive nonlinear check
+AC-CONV-01,Static mesh convergence,Critical static cases,Change in displacement and stress between final meshes,Displacement < 2%; stress < 5%,Exclude singular peak stresses from convergence claim
+AC-CONV-02,Modal convergence,First ten flexible modes,Frequency change between final meshes,< 2%,Compare MAC values and mode order

downloads/asterion-fcta-v1.0-public-release/asterion-fcta-v1.0/analysis/ansys/v0_5/model/boundary_conditions.csv

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+bc_id,name,scope,definition,note
+BC-01,Aft fixed test support,"Nodes at X=-21,000 mm","UX, UY, UZ, ROTX, ROTY, ROTZ = 0",Ground-test and screening only; not a flight boundary condition
+BC-02,Minimum stabilisation,Three non-collinear aft-frame nodes,3-2-1 constraint arrangement,Use only to remove rigid-body motion in static flight screening
+BC-03,Free-free,Whole model,No displacement constraints,Modal: verify six near-zero rigid-body modes
+BC-04,Inertia relief,Whole model,ANSYS inertia relief with applied thrust/inertial loads,Preferred later flight static representation where supported
+BC-05,Remote mass coupling,Subsystem CG remote points to reviewed attachment nodes,Deformable or distributed coupling,Do not leave MASS21 points uncoupled
+BC-06,Ring bearing sensitivity,Ring inner nodes to spine interface,"Rigid, 0.5× and 0.25× rotational stiffness cases",Required because bearing and drive stiffness is not yet designed

downloads/asterion-fcta-v1.0-public-release/asterion-fcta-v1.0/analysis/ansys/v0_5/model/load_case_definitions.csv

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+load_case_id,title,analysis_system,load_definition,boundary_condition,primary_outputs,category
+LC-STR-01,Docking compression,Static Structural,25 kN total -X at forward docking ring,Aft-end octagonal frame fixed for ground-test correlation,Global axial load path; dock-frame stress,Nominal
+LC-STR-02,Electric-propulsion thrust,Static Structural,12 kN total +X distributed over six propulsion mounts,Aft-end frame fixed for screening; flight inertia relief required later,Propulsion booms and aft spine,Nominal
+LC-STR-03,Twin-ring centrifugal,Static Structural,"2,433.19 N radial at each of 24 ring outer nodes",Aft-end fixed screening; repeat with minimum stabilisation/inertia relief,"Ring beams, spokes and hubs",Nominal
+LC-STR-04,Single-sector imbalance,Static Structural,500 kg equivalent imbalance at one Ring 1 outer node,Aft-end fixed screening,Ring distortion and bearing reaction,Off-nominal
+LC-STR-05,Emergency ring braking,Static Structural,6.484 kN·m braking torque applied tangentially to each ring,Aft-end fixed screening,Tangential ring stiffness and hub torque path,Emergency
+LC-STR-06,Powered rotating operation,Static Structural,LC-STR-02 plus LC-STR-03,Aft-end fixed screening,Combined propulsion and artificial-gravity operation,Combined
+LC-STR-07,Misaligned docking,Static Structural,25 kN axial plus 2.5 kN lateral docking load,Aft-end fixed screening,"Forward bending, dock alignment and truss stiffness",Off-nominal
+LC-MOD-01,Free-free flight modes,Modal,No external loads,No supports; six rigid-body modes expected,Flexible modes for control interaction,Flight
+LC-MOD-02,Supported ground-test modes,Modal,No external loads,Aft-end octagonal frame fixed,Test correlation and mode-shape review,Ground test
+LC-BUC-01,Docking eigenvalue buckling,Eigenvalue Buckling,Pre-stress from LC-STR-01,Same as LC-STR-01,Global and member buckling modes,Screening
+LC-SEN-01,Joint-stiffness sensitivity,Static + Modal,"Repeat critical cases with 0.25×, 0.5×, 1× and rigid joint stiffness",Per parent case,Dependence on idealised rigid joints,Sensitivity
+LC-SEN-02,Mass-location sensitivity,Modal,Shift major remote masses ±0.5 m along X,Aft-end fixed and free-free,Frequency and mode-shape robustness,Sensitivity
+LC-SEN-03,Imperfection sensitivity,Nonlinear Static,"Apply first buckling mode as 0.1%, 0.5% and 1% member-length imperfection",Same as buckling parent case,Post-buckling reserve,Future V0.8

downloads/asterion-fcta-v1.0-public-release/asterion-fcta-v1.0/analysis/ansys/v0_5/model/mesh_convergence_plan.csv

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+mesh_id,model,element_type,sizing_rule,target_nodes,target_elements,purpose
+MESH-B1,Global beam coarse,BEAM188,One element per existing member,222,580,Baseline topology check
+MESH-B2,Global beam refined,BEAM188,Split all members longer than 1.25 m,approximately 500,"approximately 1,100",Primary static/modal comparison
+MESH-B3,Global beam fine,BEAM188,Maximum member element length 0.625 m,"approximately 1,000","approximately 2,200",Final beam convergence point
+MESH-S1,Ring/hub shell local,SHELL181,40–60 mm nominal near hub; 100 mm remote,TBD,TBD,Recover plate and local joint stress
+MESH-S2,Docking shell local,SHELL181,25–50 mm with bolt-ring refinement,TBD,TBD,Misalignment and local load spread
+MESH-L1,Solid joint submodel,SOLID187,3–8 mm local tetrahedral size,"<120,000 Student nodes","<128,000 Student elements",Remain within educational solver limit