Inspect pre-solved models in your browser in 2 seconds (up to 300k DOF) or solve 1.5M+ DOF assemblies 100% offline on Windows and macOS.
Inline-4 Engine Cylinder Block
Peak cylinder combustion pressure verification and crankcase saddle stiffness evaluation for high-output powertrain design.
During the combustion stroke, peak gas pressure generates severe asymmetric bending on the cylinder wall and transfers tensile reaction loads into cylinder head bolt bosses and crankshaft bearing saddles. Distortion of the cylinder bore causes piston ring blow-by and oil consumption, while localized stress raisers in the open-deck coolant jacket bridge can initiate fatigue cracks. This FEA model verifies structural compliance, bore out-of-roundness deformation, and structural margins under 9 MPa peak firing pressure.
1. Geometry & FEA Mesh
- •Monolithic cast aluminum alloy A356-T6 (E = 72 GPa, ν = 0.33, yield strength 205 MPa).
- •B-Rep solid geometry featuring 4 in-line Ø86 mm cylinder liners with 9 mm wall thickness and open-deck cooling jacket channels.
- •Detailed crankcase architecture with 5 crankshaft main bearing saddles, stiffening webs, and 10 M11 cylinder head threaded bolt towers.
- •Conformal 10-node tetrahedral mesh with 237,420 elements and 175,200 active degrees of freedom, refined along fillet transitions.
2. Loads & Boundary Conditions
- •Kinematic fixed constraint applied to the 5 lower semi-cylindrical crankshaft bearing cap split faces.
- •9.0 MPa peak combustion gas pressure applied over the interior flame face and upper cylinder bore zone of cylinder #1.
- •Preload bolt reaction force of 45 kN per boss applied across the 10 cylinder head fastener mating seats.
3. Simulation Results & Findings
- ✓Peak von Mises stress σ_vm reaches 79.1 MPa at the fillet transition between the #1 cylinder bore wall and the deck plate bridge.
- ✓Maximum displacement vector magnitude |u| = 0.093 mm localized at the upper intake side of the #1 cylinder sleeve.
- ✓Minimum static safety factor SF = 2.59 against yield, confirming adequate endurance reserve against thermo-mechanical fatigue.
Powertrain engineering teams evaluate cylinder bore ovality and deck compliance directly in WebCAE's browser WASM engine in under 20 seconds. The ability to verify casting iterations and solve full B-Rep solids locally on desktop up to 1.5M+ DOF eliminates costly physical engine rig failures.
14 days of full Pro access. The first charge occurs only after 14 days unless canceled beforehand.
- ✓14-Day Trial ($0 Today) (cancel anytime)
- ✓Up to 1.5M+ DOFs (direct sparse solver)
- ✓Native Windows & macOS Apps (100% offline)
- ✓Nonlinear Contact & Buckling (Kσ, MITC4, RBE2/RBE3)
Ask an Engineer About Your Model
Describe your part, load case, or CAD format — we reply within 2 business hours.
Want an instant answer on FEA theory or this model?
Click the AI chat button in the bottom-right corner to ask about boundary conditions, stress criteria, mesh convergence, or DSL scripting.
More Engineering Simulation Cases
McPherson Suspension Steering Knuckle
Two-Stage Cast Gearbox Housing
Monobloc Railway Wheel Ø957 mm
