add wiki

wiki/concepts/Abaqus Nonlinear Solution Control.md

@@ -4,7 +4,7 @@ title: "Abaqus Nonlinear Solution Control"
 complexity: advanced
 domain: computational-mechanics
 created: 2026-05-29
-updated: 2026-05-29
+updated: 2026-06-01
 address: c-000081
 aliases:
   - Abaqus convergence controls
@@ -19,12 +19,17 @@ tags:
 status: current
 related:
   - "[[Abaqus-Analysis-User-s-Guide-Volume-II|Abaqus Analysis User's Guide Volume II]]"
+  - "[[Abaqus-Analysis-User-s-Guide-Volume-V|Abaqus Analysis User's Guide Volume V]]"
   - "[[Nonlinear Finite Element Analysis]]"
+  - "[[Abaqus Prescribed Conditions and Amplitudes]]"
+  - "[[Abaqus Contact Formulations and Enforcement]]"
+  - "[[Abaqus Contact Diagnostics and Modeling Difficulties]]"
   - "[[Static Equilibrium Equation Solvers]]"
   - "[[Direct Time Integration Methods]]"
   - "[[Abaqus Analysis Procedures]]"
 sources:
   - "[[Abaqus-Analysis-User-s-Guide-Volume-II|Abaqus Analysis User's Guide Volume II]]"
+  - "[[Abaqus-Analysis-User-s-Guide-Volume-V|Abaqus Analysis User's Guide Volume V]]"
 ---
 
 # Abaqus Nonlinear Solution Control
@@ -41,6 +46,8 @@ If the iteration diverges or fails to meet tolerances, Abaqus may cut back the i
 
 The guide also separates force residual convergence, correction-size checks, commonly used control parameters, automatic stabilization for unstable static problems, and transient time-integration accuracy checks.
 
+[[Abaqus-Analysis-User-s-Guide-Volume-V|Volume V]] adds two common sources of nonlinear difficulty: abrupt prescribed-condition histories and contact enforcement. Amplitude choices, boundary-condition removal, contact penalty or direct enforcement, initial overclosures, redundant contact constraints, and poorly discretized surfaces can all drive cutbacks or nonconvergence.
+
 ## Why It Matters
 
 Nonlinear failure is often not a material or element problem alone. It can reflect step size, stabilization, contact status, load amplitude, solver controls, or transient accuracy. This page is the operational counterpart to [[Nonlinear Finite Element Analysis]].
@@ -49,9 +56,11 @@ Nonlinear failure is often not a material or element problem alone. It can refle
 
 - [[Static Equilibrium Equation Solvers]] supplies the linear solves inside Newton iterations.
 - [[Direct Time Integration Methods]] supplies the transient integration context for dynamic steps.
+- [[Abaqus Prescribed Conditions and Amplitudes]] controls load and boundary-condition histories.
+- [[Abaqus Contact Formulations and Enforcement]] and [[Abaqus Contact Diagnostics and Modeling Difficulties]] cover contact-specific convergence drivers.
 - [[Abaqus Resource and Parallel Execution]] affects the cost of repeated tangent solves and cutbacks.
 
 ## Sources
 
 - [[Abaqus-Analysis-User-s-Guide-Volume-II|Abaqus Analysis User's Guide Volume II]]
-
+- [[Abaqus-Analysis-User-s-Guide-Volume-V|Abaqus Analysis User's Guide Volume V]]