International Journal of Plasticity (international-journal-of-plasticity)

Journal positioning

The International Journal of Plasticity (IJP) is a leading archival journal focused specifically on the theory and modeling of plastic deformation of solids: rate-dependent and rate-independent constitutive models, crystal plasticity, finite-deformation plasticity, and the coupling of plasticity with damage, fracture, and phase transformation. Unlike a broad solid-mechanics journal, IJP is plasticity-centric — its center of gravity is a new or improved constitutive description of inelastic behavior, formulated rigorously and validated against experiment. Papers that report a deformation observation with no constitutive contribution, or that apply an off-the-shelf plasticity model to one part with no modeling advance, are a weak fit. This skill is a fit / venue-selection / re-framing tool. It does not replace the journal's current official author guidelines. Before submitting, re-check the live IJP Guide for Authors.

When to trigger

• The author names IJP for a plasticity, crystal-plasticity, or inelastic-behavior manuscript and wants a fit/framing check.
• A paper must be re-framed from "we observed plastic deformation" into a constitutive-model contribution validated against data.
• The author is choosing between IJP (plasticity-centric, constitutive focus) and a broader fundamental-mechanics venue (journal-of-the-mechanics-and-physics-of-solids).
• The author needs IJP's constitutive-model rigor bar and desk-reject heuristics.

Scope & topic fit

• Phenomenological constitutive models of plasticity/viscoplasticity: rate-dependent and rate-independent flow rules, hardening laws, yield-surface evolution, anisotropy.
• Crystal plasticity: single-crystal and polycrystal models, slip/twinning kinematics, texture evolution, and grain-scale-to-macroscale linking.
• Finite-deformation and large-strain plasticity: kinematic decompositions, objective formulations, and their numerical implementation.
• Coupled plasticity: plasticity coupled with damage, ductile fracture, phase transformation, recrystallization, or thermomechanical effects.
• Gradient, size-dependent, and dislocation-based plasticity capturing length-scale effects with a constitutive contribution.
• Plasticity of advanced materials (high-entropy alloys, TWIP/TRIP steels, polymers, metallic glasses) when the advance is the constitutive model, not just the material.

Method & evidence bar

• The central object is a constitutive model of inelastic behavior — clearly formulated, thermodynamically and kinematically consistent, and physically motivated.
• Models must be validated against experimental data across more than one loading path or condition; fitting a single curve is not validation.
• Calibration and identification of parameters must be transparent: state the data, the procedure, and the predictive (not merely fitted) evidence.
• Numerical implementation, when central, must be verified (e.g., convergence, objectivity, consistency of the tangent) and clearly described.
• Position against the closest existing plasticity models: what behavior, coupling, or class of materials does the new model capture that prior ones do not.
• Reproducibility: report model equations, parameter values, loading protocols, and material/microstructure details sufficient to reproduce the predictions.

Structure & house style

• Standard full-length research-article structure; IJP publishes archival modeling papers — re-check article types on the live guide.
• The introduction motivates the constitutive gap (what inelastic behavior is not captured); the body develops the model, its identification, and its validation.
• Equations are central and must be self-consistent; use standard finite-deformation plasticity notation and define all internal variables.
• Figures carry the validation: model-vs-experiment overlays across loading paths, yield-surface/texture evolution, and parameter-sensitivity plots.
• Implementation details, derivations, and extended calibration go to appendices/supplementary material; the main text must establish the model and its predictive validity unaided.

Official-submission checklist

• Before giving submission-ready advice, read ../../resources/source-basis.md and ../../resources/official-source-map.md; start from the Elsevier anchors, then cite the current IJP Guide for Authors page you checked.
• Search the live site for "International Journal of Plasticity guide for authors" and follow the current Elsevier/Editorial Manager version.
• Re-check article types, length/figure expectations, and the data- and code-availability policy (model parameters, implementation, raw test data).
• Confirm equation/notation formatting and any highlights or graphical-abstract requirement.
• Re-check competing-interests, funding, author-contribution (CRediT), and AI-use disclosure requirements.
• If the live official instructions conflict with this skill, the official instructions win.

Pre-submission self-check

• The contribution is a constitutive model of inelastic behavior, not a deformation observation or an off-the-shelf application.
• The formulation is thermodynamically and kinematically consistent with explicit internal variables.
• The model is validated against experiment across multiple loading paths/conditions, not a single fitted curve.
• Parameter identification is transparent and the predictive (not just fitted) evidence is shown.
• Novelty is pinned to specific prior plasticity models (new coupling / behavior / material class).
• The article type and length fit IJP's archival modeling format.

Common desk-reject triggers

• Applying an existing plasticity model to one component with no constitutive advance.
• A new model fitted to a single test curve and presented as validated.
• Experiment-only deformation study with no constitutive modeling contribution.
• Constitutive equations proposed without thermodynamic/kinematic consistency or numerical verification.
• Scope mismatch: a broad solid-mechanics, materials-processing, or pure structural-FE paper with plasticity only as a label.
• Better framed as fundamental (non-plasticity) mechanics or a materials/microstructure study.

Re-routing decision

• Broad fundamental solid mechanics (fracture, instabilities, soft matter) → journal-of-the-mechanics-and-physics-of-solids.
• Microstructure-first plasticity mechanism (processing–structure–property) → acta-materialia.
• Plasticity in composites or composite-structure inelasticity → composites-part-b-engineering.
• Forming/machining process mechanics where plasticity is the manufacturing tool → international-journal-of-machine-tools-and-manufacture.
• Highest-impact conceptual mechanics-of-materials advance for a broad audience → nature-materials.

Output format

[Fit] High / Medium / Low (one-line reason)
[Target] International Journal of Plasticity
[Topic tags] <2–3 closest plasticity subtopics>
[Constitutive contribution] <the new model / coupling / behavior in one line>
[Method/evidence] <does the model clear IJP's formulation + multi-path validation bar?>
[Top risk] <the single most likely reason for rejection>
[Official items to re-check] <article type / length / data-code / abstract / disclosures>
[Re-route suggestion] <if not a fit, a better-matched venue>