US 2026/0235187 A1Published application

Universal simulation method and system for hysteretic behavior of asynchronized double-stage energy dissipation and vibration reduction devices

AssigneeBeijing University of Civil Engineering and Architecture

InventorsLinlin XIE, Cantian YANG, Bingyan LIU, Haoxiang WANG, Hang SUN, Qianxin WEN

Life of this patent

Estimating the term…

Loading patent…

Abstract

The present disclosure provides a universal simulation method and system for hysteretic behavior of an asynchronized double-stage energy dissipation and vibration reduction device. It proposes a restoring force model for asynchronous starting double-stage energy dissipation and vibration reduction device, which can effectively conduct seismic response analysis of structures with a parallel-connected double-stage energy dissipation and vibration reduction device. Two theoretical calculation methods for performance parameters of asynchronous starting double-stage energy dissipation and vibration reduction devices are proposed. The embodiments of the present disclosure can predict the magnitude of the damping force based on the damper structure, effectively simulate the working process of asynchronous starting double-stage energy dissipation and vibration reduction devices and the damping force-displacement hysteretic curves under different positional variations, and optimize the damping force calculation method for asynchronous starting double-stage energy dissipation and vibration reduction devices.

Claims10

Dependent claims

A universal simulation method for hysteretic behavior of an asynchronized double-stage energy dissipation and vibration reduction device, applied to a metallic yielding asynchronized double-stage damper, wherein the metallic yielding asynchronized double-stage damper comprises a first sub-damper and a second sub-damper, and the method comprises:

obtaining parameters of the metallic yielding asynchronized double-stage damper,
wherein, in a case where 0<ε<Δa2, a damping force of the metallic yielding asynchronized double-stage damper satisfies the following formula:
ε
=
σ
E
1
⁢
(
1
+
α
1
⁢
❘
"\[LeftBracketingBar]"
σ
F
y
⁢
1
❘
"\[RightBracketingBar]"
η
1
-
1
)
where, ε, σ represent displacement and force of the metallic yielding asynchronized double-stage damper;
E1 represents initial stiffness of the first sub-damper;
Fy1 represents yield force of the first sub-damper;
α1, η1 represent shape parameters of the first sub-damper;
Δa2 represents second-stage starting displacement.
in a case where Δa2<ε<Δu, a force acting solely on the first sub-damper satisfies the following formula:
ε
1
=
σ
1
E
1
⁢
(
1
+
α
1
⁢
❘
"\[LeftBracketingBar]"
σ
1
F
y
⁢
1
❘
"\[RightBracketingBar]"
η
1
-
1
)
and a force solely acting on the second sub-damper satisfies the following formula:
ε
2
=
σ
2
E
2
⁢
(
1
+
α
2
⁢
❘
"\[LeftBracketingBar]"
σ
2
F
y
⁢
2
❘
"\[RightBracketingBar]"
η
2
-
1
)
+
Δ
a
⁢
2
the damping force of the metallic yielding asynchronized double-stage damper is:
σ
=
σ
1
+
σ
2
;
where, E2 represents initial stiffness of the second sub-damper;
Fy2 represents yield force of the second sub-damper;
Δu represents maximum axial deformation;
α2, η2 represents shape parameters of the second sub-damper;
σ1 represents a force of the first sub-damper;
σ2 represents a force of the second sub-damper.

110 more elements

A universal simulation method for hysteretic behavior of an asynchronized double-stage energy dissipation and vibration reduction device, applied to a friction-metal composite asynchronized double-stage damper, wherein the friction-metal composite asynchronized double-stage damper comprises a first friction sub-damper and a second metal sub-damper, and the method comprises:

obtaining parameters of the friction-metal composite asynchronized double-stage damper;
wherein, in a case where 0<ε<Δa1, a damping force of the friction-metal composite asynchronized double-stage damper satisfies the following formula:
σ
=
E
1
·
ε
where, ε, σ represent displacement and force of the friction-metal composite asynchronized double-stage damper;
E1 represents initial stiffness of the first friction sub-damper;
Δa1 represents a displacement when a load increases to a yield force of the first friction sub-damper.
in a case where Δa1<ε<Δa2, the damping force of the friction-metal composite asynchronized double-stage damper satisfies the following formula:
σ
=
F
y
⁢
1
where Fy1 represents the yield force of the first friction sub-damper;
Δa2 represents second-stage starting displacement.
in a case where Δa2<ε<Δu,
a force acting solely on the first friction sub-damper is:
σ1=Fy1;
a force acting solely on the second metal sub-damper is:
ε
2
=
σ
2
E
2
⁢
(
1
+
α
2
⁢
❘
"\[LeftBracketingBar]"
σ
2
F
y
⁢
2
❘
"\[RightBracketingBar]"
η
2
-
1
)
+
Δ
a
⁢
2
where, E2 represents initial stiffness of the second metal sub-damper;
Fy2 represents yield force of the second metal sub-damper;
Δa2 represents second-stage starting displacement;
Au represents maximum axial deformation;
α2, η2 represents shape parameters of the second metal sub-damper;
the damping force of the friction-metal composite asynchronized double-stage damper is:
σ=σ1+σ2.

62 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/452,281Filed 17 Jan 2026
Priority: CN 202410967903.018 Jul 2024
Published: 13 Aug 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

F16F 15/002
Suppression of vibrations in systems ; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion: characterised by…
G06F 30/17
Geometric CAD: mechanical parametric or variational design
G06F 30/20
Computer-aided design [CAD]: design optimisation, verification or simulation
G06F 30/23
Design optimisation, verification or simulation: using finite element methods [FEM] or finite difference methods [FDM]