QLB: Collision-Aware Quasi-Newton Solver with Cholesky and L-BFGS for Nonlinear Time Integration
QLB: Collision-Aware Quasi-Newton Solver with Cholesky and L-BFGS for Nonlinear Time Integration
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QLB:具有 Cholesky 和 L-BFGS 的碰撞感知拟牛顿求解器,用于非线性时间积分
DOI:
10.1145/3487983.3488297
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Sueda, Shinjiro
中科院分区:
文献类型:
--
作者:
Witemeyer, Bethany;Weidner, Nicholas J.;Davis, Timothy A.;Kim, Theodore;Sueda, Shinjiro
We advocate for the straightforward applications of the Cholesky and the Limited-memory Broyden-Fletcher-Goldfarb-Shanno (L-BFGS) algorithms in the context of nonlinear time integration of deformable objects with dynamic collisions. At the beginning of each time step, we form and factor the Hessian matrix, accounting for all internal forces while omitting the implicit cross-coupling terms from the collision forces between multiple dynamic objects or self collisions. Then during the nonlinear solver iterations of the time step, we implicitly update this Hessian with L-BFGS. This approach is simple to implement and can be readily applied to any nonlinear time integration scheme, including higher-order schemes and quasistatics. We show that this approach works well in a wide range of settings involving complex nonlinear materials, including heterogeneity and anisotropy, as well as collisions, including frictional contact and self collisions.
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DOI:
10.1145/3306346.3323014
发表时间:
2019
期刊:
ACM Transactions on Graphics (TOG)
影响因子:
--
作者:
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通讯作者:
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DOI:
--
发表时间:
2016
期刊:
Symposium on Computer Animation
影响因子:
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作者:
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DOI:
10.1145/3424636.3426901
发表时间:
2020
期刊:
and Games
影响因子:
--
作者:
Weidner, Nicholas J.;Kim, Theodore;Sueda, Shinjiro
通讯作者:
Sueda, Shinjiro
DOI:
10.1111/cgf.13521
发表时间:
2018
期刊:
Comput. Graph. Forum
影响因子:
--
作者:
R. M. Sánchez;M. Otaduy
通讯作者:
M. Otaduy
影响因子:
2.5
作者:
Modi, V.;Fulton, L.;Levin, D. I. W.
通讯作者:
Levin, D. I. W.