ArticleScience advances2025
Gradient double-twisted Bouligand structural design for high impact resistance over a wide range of loading velocities.
Article in Science advances, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Strengthening Constitutive Motifs in Isotropic Fibrous Hydrogel for Exceptional Damage Resistance.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Bioinspired Mechanical Structures for Load Bearing and Energy Absorption: Cross-Scale Design and Fabrication Strategies.Biomimetics (Basel, Switzerland) · 2026Review
- Sandgrouse Feather-Inspired Multiscale Hierarchical Microstructured Surfaces via IICSA for Controlled Liquid Regulation.Small methods · 2026Article
- Collaborative passive cooling of impact-hardening interfaces enabled by nacre-mimetic design.Nature communications · 2026Article
Corrections and comments
- Erratum issued
Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Structural materials for protective applications are exposed to complex environments including impacts under a wide range of loading velocities. Bioinspired Bouligand-type structural materials show high impact resistance under quasi-static and low-velocity impacts. However, their protective performance under high-velocity impact is lacking investigation. Herein, we expand the Bouligand-type structure family by synergistically considering structural design and compositional regulation and highlight a double-twisted Bouligand structure with gradient composition (DT-Bou-G) for enhancing impact resistance under a wide range of loading velocities. As one demonstration, the DT-Bou-G structural material was fabricated by multimaterial fused deposition with stiff polylactic acid and soft thermoplastic polyurethane as raw materials. Experimental investigations show its superior impact-resistant capability under multiple loading velocities (0.5 millimeters per minute, 2.1 meters per second, 4.3 meters per second, and 120 meters per second). Finite element simulations further prove the mechanical result and reveal the underlying mechanisms. The DT-Bou-G structure will inspire the design of engineering protective materials capable of withstanding complex working conditions.
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Registered trials
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